Add support for generating a test report from layout_tests.

These tests passed on the WPT fyi bot but weren't tested in the
layout tests because the testdriver-vendor.js didn't have plumbing
for the non chromedriver path.

Since our waterfall generally runs this path it is wise to add this
support to this code path.

BUG=626703

Change-Id: I9f0c91198146535a2d5cdb71baa29d463820ddd1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2129017Reviewed-by: Robert Ma <robertma@chromium.org>
Commit-Queue: Dave Tapuska <dtapuska@chromium.org>
Cr-Commit-Position: refs/heads/master@{#755077}

third_party/blink/renderer/core/frame/test_report_body.h

@@ -6,11 +6,12 @@
 #define THIRD_PARTY_BLINK_RENDERER_CORE_FRAME_TEST_REPORT_BODY_H_
 
 #include "third_party/blink/renderer/bindings/core/v8/v8_object_builder.h"
+#include "third_party/blink/renderer/core/core_export.h"
 #include "third_party/blink/renderer/core/frame/report_body.h"
 
 namespace blink {
 
-class TestReportBody : public ReportBody {
+class CORE_EXPORT TestReportBody : public ReportBody {
   DEFINE_WRAPPERTYPEINFO();
 
  public:

third_party/blink/renderer/core/testing/internals.cc

@@ -86,7 +86,10 @@
 #include "third_party/blink/renderer/core/frame/local_frame_view.h"
 #include "third_party/blink/renderer/core/frame/performance_monitor.h"
 #include "third_party/blink/renderer/core/frame/remote_dom_window.h"
+#include "third_party/blink/renderer/core/frame/report.h"
+#include "third_party/blink/renderer/core/frame/reporting_context.h"
 #include "third_party/blink/renderer/core/frame/settings.h"
+#include "third_party/blink/renderer/core/frame/test_report_body.h"
 #include "third_party/blink/renderer/core/frame/visual_viewport.h"
 #include "third_party/blink/renderer/core/geometry/dom_point.h"
 #include "third_party/blink/renderer/core/geometry/dom_rect.h"
@@ -3532,4 +3535,14 @@ bool Internals::overlayScrollbarsEnabled() const {
   return ScrollbarThemeSettings::OverlayScrollbarsEnabled();
 }
 
+void Internals::generateTestReport(const String& message) {
+  // Construct the test report.
+  TestReportBody* body = MakeGarbageCollected<TestReportBody>(message);
+  Report* report =
+      MakeGarbageCollected<Report>("test", document_->Url().GetString(), body);
+
+  // Send the test report to any ReportingObservers.
+  ReportingContext::From(document_->ExecutingWindow())->QueueReport(report);
+}
+
 }  // namespace blink

third_party/blink/renderer/core/testing/internals.h

@@ -599,6 +599,8 @@ class Internals final : public ScriptWrappable {
   void useMockOverlayScrollbars();
   bool overlayScrollbarsEnabled() const;
 
+  void generateTestReport(const String& message);
+
  private:
   Document* ContextDocument() const;
   Vector<String> IconURLs(Document*, int icon_types_mask) const;

third_party/blink/renderer/core/testing/internals.idl

@@ -432,4 +432,7 @@
 
     void useMockOverlayScrollbars();
     readonly attribute boolean overlayScrollbarsEnabled;
+
+    // Request generation of a Reporting report.
+    void generateTestReport(DOMString message);
 };

third_party/blink/web_tests/TestExpectations

@@ -3374,11 +3374,6 @@ crbug.com/626703 external/wpt/html/semantics/forms/the-fieldset-element/accessib
 crbug.com/626703 virtual/webrtc-wpt-plan-b/external/wpt/webrtc/RTCPeerConnection-setRemoteDescription-tracks.https.html [ Timeout ]
 crbug.com/626703 external/wpt/webrtc/RTCPeerConnection-setRemoteDescription-tracks.https.html [ Timeout ]
 crbug.com/626703 external/wpt/webrtc/RTCPeerConnection-remote-track-mute.https.html [ Timeout ]
-crbug.com/626703 external/wpt/reporting/disconnect.html [ Timeout ]
-crbug.com/626703 external/wpt/reporting/generateTestReport.html [ Timeout ]
-crbug.com/626703 external/wpt/reporting/bufferSize.html [ Timeout ]
-crbug.com/626703 external/wpt/reporting/order.html [ Timeout ]
-crbug.com/626703 external/wpt/reporting/nestedReport.html [ Timeout ]
 crbug.com/626703 virtual/not-site-per-process/external/wpt/html/browsers/origin/relaxing-the-same-origin-restriction/document_domain_access_details.sub.html [ Skip ]
 crbug.com/626703 external/wpt/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-intrinsic-ratio-007v.html [ Failure ]
 crbug.com/626703 external/wpt/css/vendor-imports/mozilla/mozilla-central-reftests/counter-styles-3/system-cyclic-invalid.html [ Pass Failure Timeout ]

third_party/blink/web_tests/external/wpt/infrastructure/testdriver/generate_test_report-expected.txt

-This is a testharness.js-based test.
-FAIL TestDriver generate_test_report method assert_unreached: generate_test_report failed Reached unreachable code
-Harness: the test ran to completion.
-

third_party/blink/web_tests/external/wpt/reporting/generateTestReport.html

@@ -29,6 +29,7 @@
     observer.observe();
 
     // This should result in a "test" type report being generated and observed.
-    test_driver.generate_test_report("Test message.");
+    test_driver.generate_test_report("Test message.")
+      .catch(test.unreached_func('generate test report failed'));
   }, "Generate Test Report");
 </script>

third_party/blink/web_tests/resources/testdriver-vendor.js

@@ -136,6 +136,17 @@
     });
   };
 
+  window.test_driver_internal.generate_test_report = function(message) {
+    return new Promise(function(resolve, reject) {
+      if (internals) {
+        internals.generateTestReport(message);
+        resolve();
+      } else {
+        reject(new Error("window.internals not enabled."));
+      }
+    });
+  };
+
   window.test_driver_internal.action_sequence = function(actions) {
     if (window.top !== window) {
       return Promise.reject(new Error("can only send keys in top-level window"));