[devtools] Re-enable and adjust test expectations for coverage

This CL also adds more tests to test not only per block, but also
per function coverage.

This CL effectively reverts the commit:
 [devtools] Disable tests that (implicitly) test per-block coverage
 This reverts commit 495e3645.
 crrev.com/c/1879455

Bug: chromium:1004203, chromium:1009396
Change-Id: I99373bdd1aa4457b727cfac82c9186717a1d6134
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1883570Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#711168}

third_party/blink/web_tests/TestExpectations

@@ -5241,6 +5241,7 @@ crbug.com/946699 [ Release ] http/tests/devtools/network/network-filter-service-
 crbug.com/946711 [ Release ] http/tests/devtools/editor/text-editor-search-switch-editor.js [ Crash Pass Timeout ]
 crbug.com/946712 [ Release ] http/tests/devtools/elements/styles-2/paste-property.js [ Crash Pass Timeout ]
 crbug.com/946713 [ Release ] http/tests/devtools/extensions/extensions-resources.js [ Crash Pass Timeout ]
+crbug.com/848799 [ Win7 ] http/tests/devtools/coverage/multiple-instances-merge.js [ Pass Timeout ]
 crbug.com/947383 inspector-protocol/css/reattach-after-editing-styles.js [ Pass Timeout ]
 
 ### external/wpt/fetch/sec-metadata/
@@ -5397,6 +5398,7 @@ crbug.com/974710 [ Win7 ] virtual/isolated_world_csp/http/tests/security/isolate
 # Sheriff 2019-06-24
 crbug.com/978000 inspector-protocol/page/setWebLifecycleState.js [ Pass Timeout ]
 
+crbug.com/946700 [ Win ] http/tests/devtools/coverage/decorations-after-script-formatter.js [ Pass Timeout ]
 crbug.com/978254 [ Win ] http/tests/devtools/elements/edit/edit-dom-actions-4.js [ Pass Timeout ]
 crbug.com/977015 [ Win ] http/tests/devtools/elements/shadow/shadow-distribution.js [ Pass Timeout ]
 
@@ -5748,16 +5750,6 @@ crbug.com/1014810 [ Mac ] virtual/threaded/external/wpt/animation-worklet/statef
 crbug.com/1019662 external/wpt/html/dom/idlharness.worker.html [ Pass Timeout ]
 crbug.com/1019663 external/wpt/web-nfc/NDEFReader_options.https.html [ Failure Pass ]
 
-# Temporarily disabled for landing coverage changes in DevTools
-crbug.com/1009396 http/tests/devtools/coverage/coverage-export.js [ Pass Failure ]
-crbug.com/1009396 http/tests/devtools/coverage/coverage-repeated.js [ Pass Failure ]
-crbug.com/1009396 http/tests/devtools/coverage/coverage-suspended.js [ Pass Failure ]
-crbug.com/1009396 http/tests/devtools/coverage/coverage-view-filter.js [ Pass Failure ]
-crbug.com/1009396 http/tests/devtools/coverage/coverage-view.js [ Pass Failure ]
-crbug.com/1009396 http/tests/devtools/coverage/decorations-after-script-formatter.js [ Pass Timeout Failure ]
-crbug.com/1009396 http/tests/devtools/coverage/gutter-js.js [ Pass Failure ]
-crbug.com/1009396 http/tests/devtools/coverage/multiple-instances-merge.js [ Pass Timeout Failure ]
-
 # Temporarily disable to land source map changes that log error on failure
 crbug.com/1016772 http/tests/devtools/compiler-script-mapping.js [ Pass Failure ]
 crbug.com/1016772 http/tests/devtools/sources/debugger-ui/source-url-comment.js [ Pass Failure ]

third_party/blink/web_tests/http/tests/devtools/coverage/coverage-export-expected.txt

@@ -2,56 +2,43 @@ Tests the coverage export functionality and format.
 
 
 
-File: http://127.0.0.1:8000/devtools/coverage/resources/basic-coverage.html
-
-Usage:
-function foo() {}
-foo();
-
-Usage:
-function bar() {}
-bar();
-
-
 File: http://127.0.0.1:8000/devtools/coverage/resources/coverage.js
 
-Usage:
+Usage: [0, 27]
 function outer(index) {
 
-Usage:
+Usage: [69, 119]
 function inner2(a) {
     return a + 2;
   }
 
-Usage:
+Usage: [155, 193]
 function inner4(a) { return a + 4; }
 
-Usage:
+Usage: [229, 250]
 if (index === 7)
 
-Usage:
+Usage: [301, 456]
 // Make sure these are not collected.
   if (!self.__funcs)
     self.__funcs = [inner1, inner2, inner3, inner4, inner5];
   return self.__funcs[index];
 }
 
+Usage: [458, 523]
 function performActions() {
   return outer(1)(0) + outer(3)(0);
 }
 
-Usage:
-
-
 
 File: http://127.0.0.1:8000/devtools/coverage/resources/highlight-in-source.css
 
-Usage:
+Usage: [0, 41]
 body {
     background-color: lightblue;
 }
 
-Usage:
+Usage: [43, 69]
 .class {
     color: red;
 }
@@ -59,6 +46,6 @@ Usage:
 
 File: test://evaluations/0/coverage-export.js
 
-Usage:
+Usage: [0, 79]
 performActions()//# sourceURL=test://evaluations/0/coverage-export.js
 

third_party/blink/web_tests/http/tests/devtools/coverage/coverage-export.js

@@ -7,14 +7,14 @@
   await TestRunner.loadModule('coverage_test_runner');
   await TestRunner.navigatePromise(TestRunner.url('resources/basic-coverage.html'));
 
-  await CoverageTestRunner.startCoverage();
+  await CoverageTestRunner.startCoverage(true);
   await TestRunner.evaluateInPagePromise('performActions()');
   await CoverageTestRunner.stopCoverage();
   const report = JSON.parse(await CoverageTestRunner.exportReport());
   for (const entry of report) {
     TestRunner.addResult('\n\nFile: ' + entry.url);
     for (const range of entry.ranges) {
-      TestRunner.addResult('\nUsage:');
+      TestRunner.addResult(`\nUsage: [${range.start}, ${range.end}]`);
       TestRunner.addResult(entry.text.substring(range.start, range.end).trim());
     }
   }

third_party/blink/web_tests/http/tests/devtools/coverage/coverage-repeated-expected.txt

 Tests the coverage list view after finishing recording in the Coverage view.
 
 Initial
-.../devtools/coverage/resources/coverage.js JS used: 360 unused: 208 total: 568
+.../devtools/coverage/resources/coverage.js JS (per block) used: 360 unused: 208 total: 568
 .../devtools/coverage/resources/highlight-in-source.css CSS used: 67 unused: 142 total: 209
 After second session
-.../devtools/coverage/resources/coverage.js JS used: 360 unused: 208 total: 568
+.../devtools/coverage/resources/coverage.js JS (per block) used: 360 unused: 208 total: 568
 .../devtools/coverage/resources/highlight-in-source.css CSS used: 67 unused: 142 total: 209
 After clear
 .../devtools/coverage/resources/highlight-in-source.css CSS used: 67 unused: 142 total: 209

third_party/blink/web_tests/http/tests/devtools/coverage/coverage-repeated-per-function-expected.txt

+Tests the coverage list view after finishing recording in the Coverage view.
+
+Initial
+.../devtools/coverage/resources/coverage.js JS (per function) used: 411 unused: 157 total: 568
+.../devtools/coverage/resources/highlight-in-source.css CSS used: 67 unused: 142 total: 209
+After second session
+.../devtools/coverage/resources/coverage.js JS (per function) used: 411 unused: 157 total: 568
+.../devtools/coverage/resources/highlight-in-source.css CSS used: 67 unused: 142 total: 209
+After clear
+.../devtools/coverage/resources/highlight-in-source.css CSS used: 67 unused: 142 total: 209
+

third_party/blink/web_tests/http/tests/devtools/coverage/coverage-repeated-per-function.js

+// Copyright 2019 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+(async function() {
+  TestRunner.addResult(`Tests the coverage list view after finishing recording in the Coverage view.\n`);
+  await TestRunner.loadModule('coverage_test_runner');
+  await TestRunner.loadHTML(`
+      <p class="class">
+      </p>
+    `);
+  await TestRunner.addStylesheetTag('resources/highlight-in-source.css');
+
+  await CoverageTestRunner.startCoverage(false);
+  await TestRunner.addScriptTag('resources/coverage.js');
+  await TestRunner.evaluateInPagePromise('performActions()');
+  await CoverageTestRunner.stopCoverage();
+  TestRunner.addResult('Initial');
+  CoverageTestRunner.dumpCoverageListView();
+
+  await CoverageTestRunner.startCoverage(false);
+  await CoverageTestRunner.stopCoverage();
+  TestRunner.addResult('After second session');
+  CoverageTestRunner.dumpCoverageListView();
+
+  var coverageView = self.runtime.sharedInstance(Coverage.CoverageView);
+  coverageView._clear();
+  await CoverageTestRunner.startCoverage(false);
+  await CoverageTestRunner.stopCoverage();
+  TestRunner.addResult('After clear');
+  CoverageTestRunner.dumpCoverageListView();
+
+  TestRunner.completeTest();
+})();

third_party/blink/web_tests/http/tests/devtools/coverage/coverage-repeated.js

@@ -11,21 +11,21 @@
     `);
   await TestRunner.addStylesheetTag('resources/highlight-in-source.css');
 
-  await CoverageTestRunner.startCoverage();
+  await CoverageTestRunner.startCoverage(true);
   await TestRunner.addScriptTag('resources/coverage.js');
   await TestRunner.evaluateInPagePromise('performActions()');
   await CoverageTestRunner.stopCoverage();
   TestRunner.addResult('Initial');
   CoverageTestRunner.dumpCoverageListView();
 
-  await CoverageTestRunner.startCoverage();
+  await CoverageTestRunner.startCoverage(true);
   await CoverageTestRunner.stopCoverage();
   TestRunner.addResult('After second session');
   CoverageTestRunner.dumpCoverageListView();
 
   var coverageView = self.runtime.sharedInstance(Coverage.CoverageView);
   coverageView._clear();
-  await CoverageTestRunner.startCoverage();
+  await CoverageTestRunner.startCoverage(true);
   await CoverageTestRunner.stopCoverage();
   TestRunner.addResult('After clear');
   CoverageTestRunner.dumpCoverageListView();

third_party/blink/web_tests/http/tests/devtools/coverage/coverage-suspended-expected.txt

 Tests the coverage list view after suspending the coverage model.
 
 Initial
-.../devtools/coverage/resources/coverage.js JS used: 360 unused: 208 total: 568
+.../devtools/coverage/resources/coverage.js JS (per block) used: 360 unused: 208 total: 568
 .../devtools/coverage/resources/highlight-in-source.css CSS used: 67 unused: 142 total: 209
 After second session
-.../devtools/coverage/resources/coverage.js JS used: 360 unused: 208 total: 568
+.../devtools/coverage/resources/coverage.js JS (per block) used: 360 unused: 208 total: 568
 .../devtools/coverage/resources/highlight-in-source.css CSS used: 67 unused: 142 total: 209
 After clear
 .../devtools/coverage/resources/highlight-in-source.css CSS used: 67 unused: 142 total: 209

third_party/blink/web_tests/http/tests/devtools/coverage/coverage-suspended-per-function-expected.txt

+Tests the coverage list view after suspending the coverage model.
+
+Initial
+.../devtools/coverage/resources/coverage.js JS (per function) used: 411 unused: 157 total: 568
+.../devtools/coverage/resources/highlight-in-source.css CSS used: 67 unused: 142 total: 209
+After second session
+.../devtools/coverage/resources/coverage.js JS (per function) used: 411 unused: 157 total: 568
+.../devtools/coverage/resources/highlight-in-source.css CSS used: 67 unused: 142 total: 209
+After clear
+.../devtools/coverage/resources/highlight-in-source.css CSS used: 67 unused: 142 total: 209
+

third_party/blink/web_tests/http/tests/devtools/coverage/coverage-suspended-per-function.js

+// Copyright 2019 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+(async function() {
+  TestRunner.addResult(`Tests the coverage list view after suspending the coverage model.\n`);
+  await TestRunner.loadModule('coverage_test_runner');
+  await TestRunner.loadHTML(`
+      <p class="class">
+      </p>
+    `);
+  await TestRunner.addStylesheetTag('resources/highlight-in-source.css');
+
+  await CoverageTestRunner.startCoverage(false);
+  await CoverageTestRunner.suspendCoverageModel();
+  await TestRunner.addScriptTag('resources/coverage.js');
+  await TestRunner.evaluateInPagePromise('performActions()');
+  await CoverageTestRunner.resumeCoverageModel();
+  await CoverageTestRunner.stopCoverage();
+  TestRunner.addResult('Initial');
+  CoverageTestRunner.dumpCoverageListView();
+
+  await CoverageTestRunner.startCoverage(false);
+  await CoverageTestRunner.suspendCoverageModel();
+  await CoverageTestRunner.resumeCoverageModel();
+  await CoverageTestRunner.stopCoverage();
+  TestRunner.addResult('After second session');
+  CoverageTestRunner.dumpCoverageListView();
+
+  await CoverageTestRunner.suspendCoverageModel();
+  await CoverageTestRunner.resumeCoverageModel();
+
+  var coverageView = self.runtime.sharedInstance(Coverage.CoverageView);
+  coverageView._clear();
+
+  await CoverageTestRunner.startCoverage(false);
+  await TestRunner.evaluateInPagePromise('performActions()');
+  await CoverageTestRunner.stopCoverage();
+  TestRunner.addResult('After clear');
+  CoverageTestRunner.dumpCoverageListView();
+
+  TestRunner.completeTest();
+})();

third_party/blink/web_tests/http/tests/devtools/coverage/coverage-suspended.js

@@ -11,7 +11,7 @@
     `);
   await TestRunner.addStylesheetTag('resources/highlight-in-source.css');
 
-  await CoverageTestRunner.startCoverage();
+  await CoverageTestRunner.startCoverage(true);
   await CoverageTestRunner.suspendCoverageModel();
   await TestRunner.addScriptTag('resources/coverage.js');
   await TestRunner.evaluateInPagePromise('performActions()');
@@ -20,7 +20,7 @@
   TestRunner.addResult('Initial');
   CoverageTestRunner.dumpCoverageListView();
 
-  await CoverageTestRunner.startCoverage();
+  await CoverageTestRunner.startCoverage(true);
   await CoverageTestRunner.suspendCoverageModel();
   await CoverageTestRunner.resumeCoverageModel();
   await CoverageTestRunner.stopCoverage();
@@ -33,7 +33,7 @@
   var coverageView = self.runtime.sharedInstance(Coverage.CoverageView);
   coverageView._clear();
 
-  await CoverageTestRunner.startCoverage();
+  await CoverageTestRunner.startCoverage(true);
   await TestRunner.evaluateInPagePromise('performActions()');
   await CoverageTestRunner.stopCoverage();
   TestRunner.addResult('After clear');

third_party/blink/web_tests/http/tests/devtools/coverage/coverage-view-expected.txt

 Tests the coverage list view after finishing recording in the Coverage view.
 
-.../devtools/coverage/resources/coverage.js JS (coarse) used: 411 unused: 157 total: 568
 .../devtools/coverage/resources/highlight-in-source.css CSS used: 67 unused: 142 total: 209
-.../devtools/coverage/resources/basic-coverage.html JS (coarse) used: 51 unused: 0 total: 51
 Reloading Page
 Page reloaded.
-.../devtools/coverage/resources/coverage.js JS used: 360 unused: 208 total: 568
+.../devtools/coverage/resources/coverage.js JS (per block) used: 360 unused: 208 total: 568
 .../devtools/coverage/resources/highlight-in-source.css CSS used: 67 unused: 142 total: 209
-.../devtools/coverage/resources/basic-coverage.html JS used: 51 unused: 0 total: 51
+.../devtools/coverage/resources/basic-coverage.html JS (per block) used: 51 unused: 0 total: 51
 

third_party/blink/web_tests/http/tests/devtools/coverage/coverage-view-filter-expected.txt

 Tests the filter is properly applied to coverage list view.
 
-Filter: devtools
-.../devtools/coverage/resources/coverage.js JS used: 360 unused: 208 total: 568
+Filter: 'devtools'
+.../devtools/coverage/resources/coverage.js JS (per block) used: 360 unused: 208 total: 568
 .../devtools/coverage/resources/highlight-in-source.css CSS used: 67 unused: 142 total: 209
-.../devtools/coverage/resources/basic-coverage.html JS used: 51 unused: 0 total: 51
-Filter: CES/COV
-.../devtools/coverage/resources/coverage.js JS used: 360 unused: 208 total: 568
-Filter: no pasaran
-Filter: 
-.../devtools/coverage/resources/coverage.js JS used: 360 unused: 208 total: 568
+.../devtools/coverage/resources/basic-coverage.html JS (per block) used: 51 unused: 0 total: 51
+Filter: 'CES/COV'
+.../devtools/coverage/resources/coverage.js JS (per block) used: 360 unused: 208 total: 568
+Filter: 'no pasaran'
+Filter: ''
+.../devtools/coverage/resources/coverage.js JS (per block) used: 360 unused: 208 total: 568
 .../devtools/coverage/resources/highlight-in-source.css CSS used: 67 unused: 142 total: 209
-.../devtools/coverage/resources/basic-coverage.html JS used: 51 unused: 0 total: 51
+.../devtools/coverage/resources/basic-coverage.html JS (per block) used: 51 unused: 0 total: 51
 

third_party/blink/web_tests/http/tests/devtools/coverage/coverage-view-filter-per-function-expected.txt

+Tests the filter is properly applied to coverage list view.
+
+Filter: 'devtools'
+.../devtools/coverage/resources/coverage.js JS (per function) used: 411 unused: 157 total: 568
+.../devtools/coverage/resources/highlight-in-source.css CSS used: 67 unused: 142 total: 209
+.../devtools/coverage/resources/basic-coverage.html JS (per function) used: 51 unused: 0 total: 51
+Filter: 'CES/COV'
+.../devtools/coverage/resources/coverage.js JS (per function) used: 411 unused: 157 total: 568
+Filter: 'no pasaran'
+Filter: ''
+.../devtools/coverage/resources/coverage.js JS (per function) used: 411 unused: 157 total: 568
+.../devtools/coverage/resources/highlight-in-source.css CSS used: 67 unused: 142 total: 209
+.../devtools/coverage/resources/basic-coverage.html JS (per function) used: 51 unused: 0 total: 51
+

third_party/blink/web_tests/http/tests/devtools/coverage/coverage-view-filter-per-function.js

+// Copyright 2019 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+(async function() {
+  TestRunner.addResult(`Tests the filter is properly applied to coverage list view.\n`);
+  await TestRunner.loadModule('coverage_test_runner');
+
+  await CoverageTestRunner.startCoverage(false);
+  await TestRunner.navigatePromise(TestRunner.url('resources/basic-coverage.html'));
+  await TestRunner.evaluateInPagePromise('performActions()');
+  await CoverageTestRunner.stopCoverage();
+
+  var coverageView = self.runtime.sharedInstance(Coverage.CoverageView);
+  setFilter('devtools');
+  CoverageTestRunner.dumpCoverageListView();
+  setFilter('CES/COV');
+  CoverageTestRunner.dumpCoverageListView();
+  setFilter('no pasaran');
+  CoverageTestRunner.dumpCoverageListView();
+  setFilter('');
+  CoverageTestRunner.dumpCoverageListView();
+  TestRunner.completeTest();
+
+  function setFilter(text) {
+    coverageView._filterInput.setValue(text);
+    coverageView._filterInput._onChangeCallback();
+    TestRunner.addResult(`Filter: '${text}'`);
+  }
+})();

third_party/blink/web_tests/http/tests/devtools/coverage/coverage-view-filter.js

@@ -6,7 +6,7 @@
   TestRunner.addResult(`Tests the filter is properly applied to coverage list view.\n`);
   await TestRunner.loadModule('coverage_test_runner');
 
-  await CoverageTestRunner.startCoverage();
+  await CoverageTestRunner.startCoverage(true);
   await TestRunner.navigatePromise(TestRunner.url('resources/basic-coverage.html'));
   await TestRunner.evaluateInPagePromise('performActions()');
   await CoverageTestRunner.stopCoverage();
@@ -25,6 +25,6 @@
   function setFilter(text) {
     coverageView._filterInput.setValue(text);
     coverageView._filterInput._onChangeCallback();
-    TestRunner.addResult(`Filter: ${text}`);
+    TestRunner.addResult(`Filter: '${text}'`);
   }
 })();

third_party/blink/web_tests/http/tests/devtools/coverage/coverage-view-per-function-expected.txt

+Tests the coverage list view after finishing recording in the Coverage view.
+
+.../devtools/coverage/resources/highlight-in-source.css CSS used: 67 unused: 142 total: 209
+Reloading Page
+Page reloaded.
+.../devtools/coverage/resources/coverage.js JS (per function) used: 411 unused: 157 total: 568
+.../devtools/coverage/resources/highlight-in-source.css CSS used: 67 unused: 142 total: 209
+.../devtools/coverage/resources/basic-coverage.html JS (per function) used: 51 unused: 0 total: 51
+

third_party/blink/web_tests/http/tests/devtools/coverage/coverage-view-per-function.js

+// Copyright 2019 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+(async function() {
+  TestRunner.addResult(`Tests the coverage list view after finishing recording in the Coverage view.\n`);
+  await TestRunner.loadModule('coverage_test_runner');
+  await TestRunner.navigatePromise(TestRunner.url('resources/basic-coverage.html'));
+
+  await TestRunner.evaluateInPagePromise('performActions()');
+  await CoverageTestRunner.startCoverage();
+  await CoverageTestRunner.pollCoverage();
+  CoverageTestRunner.dumpCoverageListView();
+  TestRunner.addResult('Reloading Page');
+  await TestRunner.reloadPagePromise();
+  await TestRunner.evaluateInPagePromise('performActions()');
+  await CoverageTestRunner.stopCoverage();
+  CoverageTestRunner.dumpCoverageListView();
+
+  TestRunner.completeTest();
+})();

third_party/blink/web_tests/http/tests/devtools/coverage/coverage-view.js

@@ -8,7 +8,7 @@
   await TestRunner.navigatePromise(TestRunner.url('resources/basic-coverage.html'));
 
   await TestRunner.evaluateInPagePromise('performActions()');
-  await CoverageTestRunner.startCoverage();
+  await CoverageTestRunner.startCoverage(true);
   await CoverageTestRunner.pollCoverage();
   CoverageTestRunner.dumpCoverageListView();
   TestRunner.addResult('Reloading Page');

third_party/blink/web_tests/http/tests/devtools/coverage/decorations-after-script-formatter.js

@@ -10,7 +10,7 @@
     `);
   await TestRunner.addScriptTag('resources/coverage.js');
 
-  await CoverageTestRunner.startCoverage();
+  await CoverageTestRunner.startCoverage(true);
   await TestRunner.evaluateInPagePromise('performActions()');
   await CoverageTestRunner.stopCoverage();
   await UI.inspectorView.showPanel('sources');

third_party/blink/web_tests/http/tests/devtools/coverage/gutter-js.js

@@ -7,7 +7,7 @@
   await TestRunner.loadModule('coverage_test_runner');
   await TestRunner.addScriptTag('resources/coverage.js');
 
-  await CoverageTestRunner.startCoverage();
+  await CoverageTestRunner.startCoverage(true);
   await TestRunner.evaluateInPagePromise('performActions()');
   await CoverageTestRunner.stopCoverage();
   await CoverageTestRunner.dumpDecorations('coverage.js');

third_party/blink/web_tests/http/tests/devtools/coverage/multiple-instances-merge-expected.txt

 Tests the coverage list view after finishing recording in the Coverage view.
 
-.../devtools/coverage/resources/coverage.js JS used: 396 unused: 172 total: 568
+.../devtools/coverage/resources/coverage.js JS (per block) used: 396 unused: 172 total: 568
 .../devtools/coverage/resources/highlight-in-source.css CSS used: 90 unused: 119 total: 209
-.../devtools/coverage/resources/subframe.html JS used: 74 unused: 0 total: 74
+.../devtools/coverage/resources/subframe.html JS (per block) used: 74 unused: 0 total: 74
 0: + body {
 1: +     background-color: lightblue;
 2: + }

third_party/blink/web_tests/http/tests/devtools/coverage/multiple-instances-merge.js

@@ -6,7 +6,7 @@
   TestRunner.addResult(`Tests the coverage list view after finishing recording in the Coverage view.\n`);
   await TestRunner.loadModule('coverage_test_runner');
 
-  await CoverageTestRunner.startCoverage();
+  await CoverageTestRunner.startCoverage(true);
   await TestRunner.loadHTML(`
       <iframe src="resources/subframe.html"></iframe>
       <p class="class">