[Security][Coop] Browsing context switch reporting WPT

This CL adds basic reporting tests for browsing context switches.
It provides a reporting endpoint (report.py), and reusable helpers
within reporting-common.js, allowing future tests.
The helpers provided verify that expected report templates are present
on the expected endpoints, and that no extraneous reports are present.

This CL only convers the cases:
Popup opened from pages with coop :
 Same-origin with report only navigating to *
 Same-origin (without report) navigatin to *-with report
Follow ups will cover redirects (moved to follow up as it had timeout
 issues), other origins and iframe cases.

Bug: 1076456
Change-Id: I7a39d4def20692d8628ce2406569638310684f4f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2207451Reviewed-by: Arthur Sonzogni <arthursonzogni@chromium.org>
Commit-Queue: Pâris Meuleman <pmeuleman@chromium.org>
Auto-Submit: Pâris Meuleman <pmeuleman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#776008}

third_party/blink/web_tests/external/wpt/html/cross-origin-opener-policy/reporting-coop-navigated-popup.https.html

+<title>Cross-Origin-Opener-Policy: a navigated popup with reporting</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script src="/common/utils.js"></script> <!-- Use token() to allow running tests in parallel -->
+<script src="resources/reporting-common.js"></script>
+
+<script>
+
+// This test does the following:
+//  1 - This document has COOP: same-origin-allow-popups; report-to="coop-report-endpoint"
+//  2 - Open a popup on a same-origin page without COOP, with the coop-popup-report-endpoint
+//  3 - Navigate the popup to a same-origin page with COOP, with the coop-redirect-report-endpoint
+// it verifies that the reports are properly send for the browsing context switch
+// during the navigation in the popup (step 3). The current document (the opener)
+// endpoint should not receive any report as no switch ocurred on 2.
+promise_test( async t => {
+  const popupName = token();
+  const noCoopChannelName = token();
+  const coopChannelName = token();
+  await reportingTest( (resolve) => {
+    const noCOOP = `resources/coop-coep.py?coop=${encodeURIComponent(`unsafe-none; report-to="${popupReportEndpoint.name}"`)}&coep=&channel=${noCoopChannelName}`;
+    const coop = `resources/coop-coep.py?coop=${encodeURIComponent(`same-origin; report-to="${redirectReportEndpoint.name}"`)}&coep=&channel=${coopChannelName}`;
+
+    const popup = window.open(noCOOP, popupName);
+    const channel = new BroadcastChannel(coopChannelName);
+    // Close the popup once the test is complete.
+    // The browsing context is closed after the navigation hence use the
+    // broadcast channel to trigger the closure.
+    t.add_cleanup(() => {
+      channel.postMessage("close");
+    });
+    popup.onload = t.step_func(() => {
+      assert_equals(popup.name.length, popupName.length, "popup name");
+      channel.onmessage = t.step_func(event => {
+        const payload = event.data;
+        // The name should be empty, but we're checking the length rather than a
+        // string comparison to "" to keep the random token out of error messages.
+        assert_equals(payload.name.length, 0, "Popup name after navigation");
+        assert_false(payload.opener, "Opener after navigation");
+        assert_true(popup.closed, "Window proxy closed after navigation");
+        resolve();
+      });
+      popup.location = coop;
+    });
+  },
+  popupName,
+  [
+    // Reports expected for the navigation from "noCOOP" to "coop"
+    {
+      "endpoint": popupReportEndpoint,
+      "report": {
+        "body": {
+          "disposition": "enforce",
+          "document-uri": RegExp(`coop-coep.py?.*channel=${noCoopChannelName}$`),
+          "effective-policy": "unsafe-none",
+          "navigation-uri": RegExp(`coop-coep.py?.*channel=${coopChannelName}$`),
+          "violation-type": "navigation-from-document"
+        },
+        "url": RegExp(`coop-coep.py?.*channel=${noCoopChannelName}$`),
+        "type": "coop"
+      }
+    },
+    {
+      "endpoint": redirectReportEndpoint,
+      "report": {
+        "body": {
+          "disposition": "enforce",
+          "document-uri": RegExp(`coop-coep.py?.*channel=${coopChannelName}$`),
+          "effective-policy": "same-origin",
+          "navigation-uri": RegExp(`coop-coep.py?.*channel=${noCoopChannelName}$`),
+          "violation-type": "navigation-to-document"
+        },
+        "url": RegExp(`coop-coep.py?.*channel=${coopChannelName}$`),
+        "type": "coop"
+      }
+    },
+  ]);
+}, "Open a popup to a document without COOP, then navigate it to a document with");
+
+verifyRemainingReports();
+
+</script>

third_party/blink/web_tests/external/wpt/html/cross-origin-opener-policy/reporting-coop-navigated-popup.https.html.sub.headers

+Cross-Origin-Opener-Policy: same-origin-allow-popups; report-to="coop-report-endpoint"
+report-to: { "group": "coop-report-endpoint", "max_age": 10886400, "endpoints": [{ "url": "https://{{hosts[][www]}}:{{ports[https][0]}}/html/cross-origin-opener-policy/resources/report.py?endpoint=coop-report-endpoint" }] }, { "group": "coop-report-only-endpoint", "max_age": 10886400, "endpoints": [{ "url": "https://{{hosts[][www]}}:{{ports[https][0]}}/html/cross-origin-opener-policy/resources/report.py?endpoint=coop-report-only-endpoint" }]}

third_party/blink/web_tests/external/wpt/html/cross-origin-opener-policy/reporting-popup-same-origin-allow-popups-report-to.https.html

+<meta name=timeout content=long>
+<title>reporting same origin with report-to</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script src="/common/get-host-info.sub.js"></script>
+<script src="resources/common.js"></script>
+<script src="resources/reporting-common.js"></script>
+
+<script>
+
+let tests = [
+  // popup origin, popup COOP, popup COEP, expected opener, expected reports
+
+  // Open a same-origin popup with a same-origin COOP and no COEP. Produces two
+  // reports (one from and one to). Both pages being same origin, the
+  // next/pervious document urls are available.
+  [
+    SAME_ORIGIN,
+    `same-origin; report-to="${popupReportEndpoint.name}"`,
+    "",
+    false,
+    [
+      {
+        "endpoint": reportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": `${location.href}`,
+            "effective-policy": "same-origin-allow-popups",
+            "navigation-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/, // next document URL
+            "violation-type": "navigation-from-document"
+          },
+          "url": `${location.href}`,
+          "type": "coop"
+        }
+      },
+      {
+        "endpoint": popupReportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+            "effective-policy": "same-origin",
+            "navigation-uri": `${location.href}`, // previous documnent url
+            "violation-type": "navigation-to-document"
+          },
+          "url": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+          "type": "coop"
+        }
+      }
+    ]
+  ],
+  // Open a cross-origin popup with a same-origin-allow-popup COOP and noCOEP.
+  // Produces two reports (one from and one to). Both pages being cross origin,
+  // the next/pervious document urls are not available and the initial document
+  // url/referrer are used instead.
+  [
+    CROSS_ORIGIN,
+    `same-origin-allow-popups; report-to="${popupReportEndpoint.name}"`,
+    "require-corp",
+    false,
+    [
+      {
+        "endpoint": reportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": `${location.href}`,
+            "effective-policy": "same-origin-allow-popups",
+            "navigation-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/, // initial navigation URL
+            "violation-type": "navigation-from-document"
+          },
+          "url": `${location.href}`,
+          "type": "coop"
+        }
+      },
+      {
+        "endpoint": popupReportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+            "effective-policy": "same-origin-allow-popups",
+            "navigation-uri": `${location.origin}/`, // referrer (origin, as dictated by the referrer policy)
+            "violation-type": "navigation-to-document"
+          },
+          "url": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+          "type": "coop"
+        }
+      }
+    ]
+  ],
+  // Open a cross-origin popup with a same-origin COOP and COEP, and no reporting.
+  // Produces one navigation-from-report for this document (the opener). The
+  // pages being cross origin, the next/pervious document urls are not available
+  // and the initial document url/referrer are used instead.
+  [
+    CROSS_ORIGIN,
+    `same-origin`,
+    "require-corp",
+    false,
+    [
+      {
+        "endpoint": reportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": `${location.href}`,
+            "effective-policy": "same-origin-allow-popups",
+            "navigation-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/, // initial navigation URL
+            "violation-type": "navigation-from-document"
+          },
+          "url": `${location.href}`,
+          "type": "coop"
+        }
+      }
+    ]
+  ],
+];
+
+runCoopReportingTest(document.title, tests);
+
+</script>

third_party/blink/web_tests/external/wpt/html/cross-origin-opener-policy/reporting-popup-same-origin-allow-popups-report-to.https.html.headers

+report-to: { "group": "coop-report-endpoint", "max_age": 10886400, "endpoints": [{ "url": "https://{{hosts[][www]}}:{{ports[https][0]}}/html/cross-origin-opener-policy/resources/report.py?endpoint=coop-report-endpoint" }] }, { "group": "coop-report-only-endpoint", "max_age": 10886400, "endpoints": [{ "url": "https://{{hosts[][www]}}:{{ports[https][0]}}/html/cross-origin-opener-policy/resources/report.py?endpoint=coop-report-only-endpoint" }]}
+Cross-Origin-Opener-Policy: same-origin-allow-popups; report-to="coop-report-endpoint"
+Referrer-Policy: origin

third_party/blink/web_tests/external/wpt/html/cross-origin-opener-policy/reporting-popup-same-origin-coep-report-to.https.html

+<meta name=timeout content=long>
+<title>reporting same origin with report-to</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script src="/common/get-host-info.sub.js"></script>
+<script src="resources/common.js"></script>
+<script src="resources/reporting-common.js"></script>
+
+<script>
+
+let tests = [
+  // popup origin, popup COOP, popup COEP, expected opener, expected reports
+
+  // Open and navigate a popup to a same-origin page with the same COOP-COEP
+  // settings: no browsing context group switch hence no report expected.
+  [
+    SAME_ORIGIN,
+    `same-origin; report-to="${popupReportEndpoint.name}"`,
+    "require-corp",
+    true,
+    []
+  ],
+  // Open a same-origin popup with a same-origin COOP but no COEP. Produces two
+  // reports (one from and one to). The from report has an effective-policy of
+  // same-origin-plus-coep, both pages being same origin, the entire
+  // next/pervious document urls are available.
+  [
+    SAME_ORIGIN,
+    `same-origin; report-to="${popupReportEndpoint.name}"`,
+    "",
+    false,
+    [
+      {
+        "endpoint": reportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": `${location.href}`,
+            "effective-policy": "same-origin-plus-coep",
+            "navigation-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/, // next destination url
+            "violation-type": "navigation-from-document"
+          },
+          "url": `${location.href}`,
+          "type": "coop"
+        }
+      },
+      {
+        "endpoint": popupReportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+            "effective-policy": "same-origin",
+            "navigation-uri": `${location.href}`, // previous document url
+            "violation-type": "navigation-to-document"
+          },
+          "url": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+          "type": "coop"
+        }
+      }
+    ]
+  ],
+  // Open a cross-origin popup with a same-origin COOP and COEP.  Produces two
+  // reports (one from and one to). The from report has an effective-policy of
+  // same-origin-plus-coep, both pages being cross origin, the next/pervious
+  // document urls are not available and the initial document url/referrer are
+  // used instead.
+  [
+    CROSS_ORIGIN,
+    `same-origin; report-to="${popupReportEndpoint.name}"`,
+    "require-corp",
+    false,
+    [
+      {
+        "endpoint": reportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": `${location.href}`,
+            "effective-policy": "same-origin-plus-coep",
+            "navigation-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/, // initial navigation url
+            "violation-type": "navigation-from-document"
+          },
+          "url": `${location.href}`,
+          "type": "coop"
+        }
+      },
+      {
+        "endpoint": popupReportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+            "effective-policy": "same-origin-plus-coep",
+            "navigation-uri": `${location.origin}/`, // referrer (origin, as dictated by the referrer policy)
+            "violation-type": "navigation-to-document"
+          },
+          "url": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+          "type": "coop"
+        }
+      }
+    ]
+  ],
+];
+
+runCoopReportingTest(document.title, tests);
+
+</script>

third_party/blink/web_tests/external/wpt/html/cross-origin-opener-policy/reporting-popup-same-origin-coep-report-to.https.html.headers

+report-to: { "group": "coop-report-endpoint", "max_age": 10886400, "endpoints": [{ "url": "https://{{hosts[][www]}}:{{ports[https][0]}}/html/cross-origin-opener-policy/resources/report.py?endpoint=coop-report-endpoint" }] }, { "group": "coop-report-only-endpoint", "max_age": 10886400, "endpoints": [{ "url": "https://{{hosts[][www]}}:{{ports[https][0]}}/html/cross-origin-opener-policy/resources/report.py?endpoint=coop-report-only-endpoint" }]}
+Cross-Origin-Opener-Policy: same-origin; report-to="coop-report-endpoint"
+Cross-Origin-Embedder-Policy: require-corp
+Referrer-Policy: origin
\ No newline at end of file

third_party/blink/web_tests/external/wpt/html/cross-origin-opener-policy/reporting-popup-same-origin-report-to.https.html

+<meta name=timeout content=long>
+<title>reporting same origin with report-to</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script src="/common/get-host-info.sub.js"></script>
+<script src="resources/common.js"></script>
+<script src="resources/reporting-common.js"></script>
+
+<script>
+
+let tests = [
+  // popup origin, popup COOP, popup COEP, expected opener, expected reports
+
+  // Open a popup on a same-origin page, with a compatible COOP.
+  // This is a sanity check that no report are produced.
+  [
+    SAME_ORIGIN,
+    `same-origin; report-to="${popupReportEndpoint.name}"`,
+    "",
+    true,
+    []
+  ],
+  // Open a cross-origin popup with a same-origin COOP. Produces two
+  // reports (one from and one to). The from report has an effective-policy of
+  // same-origin (corresponding to the current document), both pages being
+  // cross origin, the next/pervious document urls are not available and the
+  // initial document url/referrer are used instead.
+  [
+    CROSS_ORIGIN,
+    `same-origin; report-to="${popupReportEndpoint.name}"`,
+    "",
+    false,
+    [
+      {
+        "endpoint": reportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": `${location.href}`,
+            "effective-policy": "same-origin",
+            "navigation-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/, // initial navigation URL (equal to the next document url in that case)
+            "violation-type": "navigation-from-document"
+          },
+          "url": `${location.href}`,
+          "type": "coop"
+        }
+      },
+      {
+        "endpoint": popupReportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+            "effective-policy": "same-origin",
+            "navigation-uri": '', // referrer (empty due to the Referrer Policy)
+            "violation-type": "navigation-to-document"
+          },
+          "url": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+          "type": "coop"
+        }
+      }
+    ]
+  ],
+  // Open a same-origin popup with a unsafe-none COOP and no COEP. COOP switches
+  // the browsing context group and hence produces two reports (one from and one
+  // to). This test verifies that unsafe-none properly sends report.
+  [
+    SAME_ORIGIN,
+    `unsafe-none; report-to="${popupReportEndpoint.name}"`,
+    "",
+    false,
+    [
+      {
+        "endpoint": reportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": `${location.href}`,
+            "effective-policy": "same-origin",
+            "navigation-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+            "violation-type": "navigation-from-document"
+          },
+          "url": `${location.href}`,
+          "type": "coop"
+        }
+      },
+      {
+        "endpoint": popupReportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+            "effective-policy": "unsafe-none",
+            "navigation-uri": `${location.href}`,
+            "violation-type": "navigation-to-document"
+          },
+          "url": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+          "type": "coop"
+        }
+      }
+    ]
+  ],
+  // Open a same-origin popup with a same-origin COOP and COEP. The difference
+  // of COEP values leads to the browsing context group switch and produces two
+  // reports. This verifies that the navigation-to-document report has an
+  // effective-policy of same-origin-plus-coep.
+  [
+    SAME_ORIGIN,
+    `same-origin; report-to="${popupReportEndpoint.name}"`,
+    "require-corp",
+    false,
+    [
+      {
+        "endpoint": reportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": `${location.href}`,
+            "effective-policy": "same-origin",
+            "navigation-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/, // Next document URL
+            "violation-type": "navigation-from-document"
+          },
+          "url": `${location.href}`,
+          "type": "coop"
+        }
+      },
+      {
+        "endpoint": popupReportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+            "effective-policy": "same-origin-plus-coep",
+            "navigation-uri": `${location.href}`, // Previous document URL
+            "violation-type": "navigation-to-document"
+          },
+          "url": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+          "type": "coop"
+        }
+      }
+    ]
+  ],
+  // Open a cross-origin popup with no COOP (but reporting) and no COEP.
+  // Produces two reports. The pages being cross origin, the next/pervious
+  // document urls are not available and the initial document url/referrer are
+  // used instead.
+  [
+    CROSS_ORIGIN,
+    `unsafe-none; report-to="${popupReportEndpoint.name}"`,
+    "",
+    false,
+    [
+      {
+        "endpoint": reportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": `${location.href}`,
+            "effective-policy": "same-origin",
+            "navigation-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/, // initial navigation URL
+            "violation-type": "navigation-from-document"
+          },
+          "url": `${location.href}`,
+          "type": "coop"
+        }
+      },
+      {
+        "endpoint": popupReportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+            "effective-policy": "unsafe-none",
+            "navigation-uri": '', // referrer, as per the no-referrer policy.
+            "violation-type": "navigation-to-document"
+          },
+          "url": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+          "type": "coop"
+        }
+      }
+    ]
+  ],
+  // Open a same-origin popup with no COOP (without reporting) and no COEP.
+  // Produces one report to this page (opener) endpoint.
+  // This verifies that the navigated-to-document's COOP report values do not
+  // impact the navigated-from-document's COOP.
+  [
+    SAME_ORIGIN,
+    "unsafe-none",
+    "",
+    false,
+    [
+      {
+        "endpoint": reportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": `${location.href}`,
+            "effective-policy": "same-origin",
+            "navigation-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+            "violation-type": "navigation-from-document"
+          },
+          "url": `${location.href}`,
+          "type": "coop"
+        }
+      }
+    ]
+  ]
+];
+
+runCoopReportingTest(document.title, tests);
+
+</script>

third_party/blink/web_tests/external/wpt/html/cross-origin-opener-policy/reporting-popup-same-origin-report-to.https.html.sub.headers

+report-to: { "group": "coop-report-endpoint", "max_age": 10886400, "endpoints": [{ "url": "https://{{hosts[][www]}}:{{ports[https][0]}}/html/cross-origin-opener-policy/resources/report.py?endpoint=coop-report-endpoint" }] }, { "group": "coop-report-only-endpoint", "max_age": 10886400, "endpoints": [{ "url": "https://{{hosts[][www]}}:{{ports[https][0]}}/html/cross-origin-opener-policy/resources/report.py?endpoint=coop-report-only-endpoint" }]}
+Cross-Origin-Opener-Policy: same-origin; report-to="coop-report-endpoint"
+Referrer-Policy: no-referrer

third_party/blink/web_tests/external/wpt/html/cross-origin-opener-policy/reporting-popup-same-origin.https.html

+<meta name=timeout content=long>
+<title>reporting same origin</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script src="/common/get-host-info.sub.js"></script>
+<script src="resources/common.js"></script>
+<script src="resources/reporting-common.js"></script>
+
+<script>
+
+let tests = [
+  // popup origin, popup COOP, popup COEP, expected opener, expected reports
+
+  // Open a cross-origin popup with a same-origin COOP and no COEP. COOP
+  // switches the browsing context group and hence produces one report.
+  // This test verifies that the navigated to document properly sends a
+  // navigation-to report. The navigation-uri is the referrer.
+  [
+    CROSS_ORIGIN,
+    `same-origin; report-to="${popupReportEndpoint.name}"`,
+    "",
+    false,
+    [
+      {
+        "endpoint": popupReportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+            "effective-policy": "same-origin",
+            "navigation-uri": `${location.href}`, // referrer
+            "violation-type": "navigation-to-document"
+          },
+          "url": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+          "type": "coop"
+        }
+      }
+    ]
+  ],
+  // Open a same-origin popup with a unsafe-none COOP and no COEP. COOP switches
+  // the browsing context group and hence produces one report.
+  // This test verifies that having different policies on same origin documents
+  // still properly produces report to the navigated-to-document.
+  [
+    SAME_ORIGIN,
+    `unsafe-none; report-to="${popupReportEndpoint.name}"`,
+    "",
+    false,
+    [
+      {
+        "endpoint": popupReportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+            "effective-policy": "unsafe-none",
+            "navigation-uri": `${location.href}`,
+            "violation-type": "navigation-to-document"
+          },
+          "url": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+          "type": "coop"
+        }
+      }
+    ]
+  ],
+  // Open a cross-origin popup with a unsafe-none COOP (with reporting) and no
+  // COEP. COOP switches the browsing context group and hence produces one
+  // reports to the unsafe-none document. This test verifies that unsafe-none
+  // properly sends report in that configuration.
+  [
+    CROSS_ORIGIN,
+    `unsafe-none; report-to="${popupReportEndpoint.name}"`,
+    "",
+    false,
+    [
+      {
+        "endpoint": popupReportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+            "effective-policy": "unsafe-none",
+            "navigation-uri": `${location.href}`, // referrer
+            "violation-type": "navigation-to-document"
+          },
+          "url": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+          "type": "coop"
+        }
+      }
+    ]
+  ]
+];
+
+runCoopReportingTest(document.title, tests);
+
+</script>

third_party/blink/web_tests/external/wpt/html/cross-origin-opener-policy/reporting-popup-same-origin.https.html.headers

+Cross-Origin-Opener-Policy: same-origin

third_party/blink/web_tests/external/wpt/html/cross-origin-opener-policy/reporting-popup-unafe-none-report-to.https.html

+<meta name=timeout content=long>
+<title>reporting same origin with report-to</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script src="/common/get-host-info.sub.js"></script>
+<script src="resources/common.js"></script>
+<script src="resources/reporting-common.js"></script>
+
+<script>
+
+let tests = [
+  // popup origin, popup COOP, popup COEP, expected opener, expected reports
+
+  // Open a same-origin popup with a same-origin COOP with reporting and no COEP.
+  // COOP switches the browsing context group and hence produces two reports
+  // (one from and one to). This test verifies that unsafe-none (from the opener)
+  // properly sends a report.
+  [
+    SAME_ORIGIN,
+    `same-origin; report-to="${popupReportEndpoint.name}"`,
+    "",
+    false,
+    [
+      {
+        "endpoint": reportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": `${location.href}`,
+            "effective-policy": "unsafe-none",
+            "navigation-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/, // next document URL
+            "violation-type": "navigation-from-document"
+          },
+          "url": `${location.href}`,
+          "type": "coop"
+        }
+      },
+      {
+        "endpoint": popupReportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+            "effective-policy": "same-origin",
+            "navigation-uri": `${location.href}`, // previous document url
+            "violation-type": "navigation-to-document"
+          },
+          "url": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+          "type": "coop"
+        }
+      }
+    ]
+  ],
+  // Open a same-origin popup with a same-origin COOP (no reporting)and no COEP.
+  // COOP switches the browsing context group and hence produces one report for
+  // the navigated from document (this page, the opener). This test differs with
+  // the previous one as it assert that the navigated to document's COOP reporting
+  // values do not interfere.
+  [
+    SAME_ORIGIN,
+    `same-origin`,
+    "",
+    false,
+    [
+      {
+        "endpoint": reportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": `${location.href}`,
+            "effective-policy": "unsafe-none",
+            "navigation-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/, // next document URL
+            "violation-type": "navigation-from-document"
+          },
+          "url": `${location.href}`,
+          "type": "coop"
+        }
+      }
+    ]
+  ],
+  // Open a cross-origin popup with a same-origin COOP and no COEP. COOP switches
+  // the browsing context group and hence produces two reports.
+  [
+    CROSS_ORIGIN,
+    `same-origin; report-to="${popupReportEndpoint.name}"`,
+    "",
+    false,
+    [
+      {
+        "endpoint": reportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": `${location.href}`,
+            "effective-policy": "unsafe-none",
+            "navigation-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/, // initial navigation url
+            "violation-type": "navigation-from-document"
+          },
+          "url": `${location.href}`,
+          "type": "coop"
+        }
+      },
+      {
+        "endpoint": popupReportEndpoint,
+        "report": {
+          "body": {
+            "disposition": "enforce",
+            "document-uri": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+            "effective-policy": "same-origin",
+            "navigation-uri": `${location.href}`, // referrer
+            "violation-type": "navigation-to-document"
+          },
+          "url": /coop-coep.py?.*channel=CHANNEL_NAME$/,
+          "type": "coop"
+        }
+      }
+    ]
+  ]
+];
+
+runCoopReportingTest(document.title, tests);
+
+</script>

third_party/blink/web_tests/external/wpt/html/cross-origin-opener-policy/reporting-popup-unafe-none-report-to.https.html.headers

+report-to: { "group": "coop-report-endpoint", "max_age": 10886400, "endpoints": [{ "url": "https://{{hosts[][www]}}:{{ports[https][0]}}/html/cross-origin-opener-policy/resources/report.py?endpoint=coop-report-endpoint" }] }, { "group": "coop-report-only-endpoint", "max_age": 10886400, "endpoints": [{ "url": "https://{{hosts[][www]}}:{{ports[https][0]}}/html/cross-origin-opener-policy/resources/report.py?endpoint=coop-report-only-endpoint" }]}
+Cross-Origin-Opener-Policy: unsafe-none; report-to="coop-report-endpoint"

third_party/blink/web_tests/external/wpt/html/cross-origin-opener-policy/resources/common.js

@@ -29,11 +29,14 @@ function validate_results(callback, test, w, channelName, hasOpener, openerDOMAc
   }
 }
 
-function url_test(t, url, channelName, hasOpener, openerDOMAccess) {
+function url_test(t, url, channelName, hasOpener, openerDOMAccess, callback) {
+  if (callback === undefined) {
+    callback = () => { t.done(); };
+  }
   const bc = new BroadcastChannel(channelName);
   bc.onmessage = t.step_func(event => {
     const payload = event.data;
-    validate_results(() => { t.done(); }, t, w, channelName, hasOpener, openerDOMAccess, payload);
+    validate_results(callback, t, w, channelName, hasOpener, openerDOMAccess, payload);
   });
 
   const w = window.open(url, channelName);
@@ -46,12 +49,12 @@ function url_test(t, url, channelName, hasOpener, openerDOMAccess) {
   });
 }
 
-function coop_coep_test(t, host, coop, coep, channelName, hasOpener, openerDOMAccess) {
-  url_test(t, `${host.origin}/html/cross-origin-opener-policy/resources/coop-coep.py?coop=${encodeURIComponent(coop)}&coep=${coep}&channel=${channelName}`, channelName, hasOpener, openerDOMAccess);
+function coop_coep_test(t, host, coop, coep, channelName, hasOpener, openerDOMAccess, callback) {
+  url_test(t, `${host.origin}/html/cross-origin-opener-policy/resources/coop-coep.py?coop=${encodeURIComponent(coop)}&coep=${coep}&channel=${channelName}`, channelName, hasOpener, openerDOMAccess, callback);
 }
 
-function coop_test(t, host, coop, channelName, hasOpener) {
-  coop_coep_test(t, host, coop, "", channelName, hasOpener);
+function coop_test(t, host, coop, channelName, hasOpener, callback) {
+  coop_coep_test(t, host, coop, "", channelName, hasOpener, undefined /* openerDOMAccess */, callback);
 }
 
 function run_coop_tests(documentCOOPValueTitle, testArray) {
@@ -59,7 +62,7 @@ function run_coop_tests(documentCOOPValueTitle, testArray) {
     async_test(t => {
       coop_test(t, test[0], test[1],
                 `${documentCOOPValueTitle}_to_${test[0].name}_${test[1].replace(/ /g,"-")}`,
-                test[2]);
+                test[2], () => { t.done(); });
     }, `${documentCOOPValueTitle} document opening popup to ${test[0].origin} with COOP: "${test[1]}"`);
   }
 }

third_party/blink/web_tests/external/wpt/html/cross-origin-opener-policy/resources/coop-coep.py

+def get_reporting_group(host, endpoint):
+  return '\
+{{\
+    "group": "{endpoint}",\
+    "max_age": 10886400,\
+    "endpoints":\
+  [{{\
+    "url": "https://{host}/html/cross-origin-opener-policy/resources/report.py?endpoint={endpoint}"\
+  }}]\
+}}'.format(host=host, endpoint=endpoint)
+
 def main(request, response):
     coop = request.GET.first("coop")
+    coopReportOnly = request.GET.first("coop-report-only") if "coop-report-only" in request.GET else ""
     coep = request.GET.first("coep")
+    coepReportOnly = request.GET.first("coep-report-only") if "coep-report-only" in request.GET else ""
     redirect = request.GET.first("redirect", None)
     if coop != "":
         response.headers.set("Cross-Origin-Opener-Policy", coop)
+    if coop != "":
+        response.headers.set("Cross-Origin-Opener-Policy-Report-Only", coopReportOnly)
     if coep != "":
         response.headers.set("Cross-Origin-Embedder-Policy", coep)
+    if coep != "":
+         response.headers.set("Cross-Origin-Embedder-Policy-Report-Only", coepReportOnly)
     if 'cache' in request.GET:
         response.headers.set('Cache-Control', 'max-age=3600')
+    host = request.url_parts[1]
+
+    # add all possible reporting endpoints to the report-to header
+    # Note that this also returns the coop-report-endpoint, as it may override
+    # the test's endpoints if same-origin.
+    response.headers.set('report-to',
+      get_reporting_group(host, "coop-report-endpoint") + ',' +
+      get_reporting_group(host, "coop-report-only-endpoint") + ',' +
+      get_reporting_group(host, "coop-redirect-report-endpoint") + ',' +
+      get_reporting_group(host, "coop-redirect-report-only-endpoint") + ',' +
+      get_reporting_group(host, "coop-popup-report-endpoint") + ',' +
+      get_reporting_group(host, "coop-popup-report-only-endpoint") )
 
     if redirect != None:
         response.status = 302

third_party/blink/web_tests/external/wpt/html/cross-origin-opener-policy/resources/report.py

+import json, uuid
+
+def main(request, response):
+    response.headers.set('Cache-Control', 'no-cache, no-store, must-revalidate');
+
+    key = 0;
+    if 'endpoint' in request.GET:
+        key = uuid.uuid5(uuid.NAMESPACE_OID, request.GET['endpoint']).get_urn()
+
+    if key == 0:
+        response.status = 400
+        return 'invalid endpoint'
+
+    if request.method == 'POST':
+        reports = request.server.stash.take(key) or []
+        for report in json.loads(request.body):
+            reports.append(report)
+        request.server.stash.put(key, reports)
+        return "done"
+
+    if request.method == 'GET':
+        response.headers.set('Content-Type', 'application/json')
+        return json.dumps(request.server.stash.take(key) or [])
+
+    response.status = 400
+    return 'invalid method'

third_party/blink/web_tests/external/wpt/html/cross-origin-opener-policy/resources/reporting-common.js

+// Allows RegExps to be pretty printed when printing unmatched expected reports.
+Object.defineProperty(RegExp.prototype, "toJSON", {
+  value: RegExp.prototype.toString
+});
+
+function wait(ms) {
+  return new Promise(resolve => step_timeout(resolve, ms));
+}
+
+async function pollReports(endpoint) {
+  const res = await fetch(
+      `resources/report.py?endpoint=${endpoint.name}`,
+      {cache: 'no-store'});
+  if (res.status !== 200) {
+    return;
+  }
+  for (const report of await res.json()) {
+    endpoint.reports.push(report);
+  }
+}
+
+// Recursively check that all members of expectedReport are present or matched
+// in report.
+// Report may have members not explicitly expected by expectedReport.
+function isObjectAsExpected(report, expectedReport) {
+  if (( report === undefined || report === null
+        || expectedReport === undefined || expectedReport === null )
+      && report !== expectedReport ) {
+    return false;
+  }
+  if (expectedReport instanceof RegExp && typeof report === "string") {
+    return expectedReport.test(report);
+  }
+  // Perform this check now, as RegExp and strings above have different typeof.
+  if (typeof report !== typeof expectedReport)
+    return false;
+  if (typeof expectedReport === 'object') {
+    return Object.keys(expectedReport).every(key => {
+      return isObjectAsExpected(report[key], expectedReport[key]);
+    });
+  }
+  return report == expectedReport;
+}
+
+async function checkForExpectedReport(expectedReport) {
+  return new Promise( async (resolve, reject) => {
+    const polls = 30;
+    const waitTime = 100;
+    for (var i=0; i < polls; ++i) {
+      pollReports(expectedReport.endpoint);
+      for (var j=0; j<expectedReport.endpoint.reports.length; ++j){
+        if (isObjectAsExpected(expectedReport.endpoint.reports[j],
+            expectedReport.report)){
+          expectedReport.endpoint.reports.splice(j,1);
+          resolve();
+        }
+      };
+      await wait(waitTime);
+    }
+    reject("No report matched the expected report for endpoint: "
+      + expectedReport.endpoint.name
+      + ", expected report: " + JSON.stringify(expectedReport.report)
+      + ", within available reports: "
+      + JSON.stringify(expectedReport.endpoint.reports)
+    );
+  });
+}
+
+function replaceFromRegexOrString(str, match, value) {
+  if (str instanceof RegExp) {
+    return RegExp(str.source.replace(match, value));
+  }
+  return str.replace(match, value);
+}
+
+// Replace generated values in regexes and strings of an expected report:
+// CHANNEL_NAME: the channel name is generated from the test parameters.
+function replaceValuesInExpectedReport(expectedReport, channelName) {
+  if (expectedReport.report.body !== undefined) {
+    if (expectedReport.report.body["document-uri"] !== undefined) {
+      expectedReport.report.body["document-uri"] = replaceFromRegexOrString(
+          expectedReport.report.body["document-uri"], "CHANNEL_NAME",
+          channelName);
+    }
+    if (expectedReport.report.body["navigation-uri"] !== undefined) {
+      expectedReport.report.body["navigation-uri"] = replaceFromRegexOrString(
+          expectedReport.report.body["navigation-uri"], "CHANNEL_NAME",
+          channelName);
+    }
+  }
+  if (expectedReport.report.url !== undefined) {
+      expectedReport.report.url = replaceFromRegexOrString(
+          expectedReport.report.url, "CHANNEL_NAME", channelName);
+  }
+  return expectedReport;
+}
+
+// Run a test (such as coop_coep_test from ./common.js) then check that all
+// expected reports are present.
+async function reportingTest(testFunction, channelName, expectedReports) {
+  await new Promise( async resolve => {
+    testFunction(resolve);
+  });
+  expectedReports = Array.from(
+      expectedReports,
+      report => replaceValuesInExpectedReport(report, channelName) );
+  await Promise.all(Array.from(expectedReports, checkForExpectedReport));
+}
+
+function coopCoepReportingTest(testName, host, coop, coep, hasOpener,
+    expectedReports){
+  const channelName = `${testName.replace(/[ ;"=]/g,"-")}_to_${host.name}_${coop.replace(/[ ;"=]/g,"-")}_${coep}`;
+  promise_test(async t => {
+    await reportingTest( (resolve) => {
+      coop_coep_test(t, host, coop, coep, channelName,
+          hasOpener, undefined /* openerDOMAccess */, resolve);
+    }, channelName, expectedReports);
+  }, `coop reporting test ${channelName}`);
+}
+
+// Run an array of reporting tests then verify there's no reports that were not
+// expected.
+// Tests' elements contain: host, coop, coep, hasOpener, expectedReports.
+// See isObjectAsExpected for explanations regarding the matching behavior.
+function runCoopReportingTest(testName, tests){
+  tests.forEach( test => {
+    coopCoepReportingTest(testName, ...test);
+  });
+  verifyRemainingReports();
+}
+
+const reportEndpoint = {
+  name: "coop-report-endpoint",
+  reports: []
+}
+const reportOnlyEndpoint = {
+  name: "coop-report-only-endpoint",
+  reports: []
+}
+const popupReportEndpoint = {
+  name: "coop-popup-report-endpoint",
+  reports: []
+}
+const popupReportOnlyEndpoint = {
+  name: "coop-popup-report-only-endpoint",
+  reports: []
+}
+const redirectReportEndpoint = {
+  name: "coop-redirect-report-endpoint",
+  reports: []
+}
+const redirectReportOnlyEndpoint = {
+  name: "coop-redirect-report-only-endpoint",
+  reports: []
+}
+
+const reportEndpoints = [
+  reportEndpoint,
+  reportOnlyEndpoint,
+  popupReportEndpoint,
+  popupReportOnlyEndpoint,
+  redirectReportEndpoint,
+  redirectReportOnlyEndpoint
+]
+
+function verifyRemainingReports() {
+  promise_test( async t => {
+    await Promise.all(Array.from(reportEndpoints, (endpoint) => {
+      return new Promise( async (resolve, reject) => {
+        await pollReports(endpoint);
+        if (endpoint.reports.length != 0)
+          reject( `${endpoint.name} not empty`);
+        resolve();
+      });
+    }));
+  }, "verify remaining reports");
+}