TestingPlatformSupport: register Platform instance correctly

third_party/WebKit/Source/modules/webaudio/BaseAudioContextTest.cpp

 // Copyright 2016 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.
 
 #include "modules/webaudio/BaseAudioContext.h"
 
 #include "core/dom/Document.h"
 #include "core/dom/DocumentUserGestureToken.h"
 #include "core/frame/FrameOwner.h"
 #include "core/frame/FrameTypes.h"
@@ skipping 105 matching lines @@
 
   void recordAutoplayStatus(BaseAudioContext* audioContext) {
     audioContext->recordAutoplayStatus();
   }
 
  private:
   std::unique_ptr<DummyPageHolder> m_dummyPageHolder;
   Persistent<DummyFrameOwner> m_dummyFrameOwner;
 
   Persistent<LocalFrame> m_childFrame;
-
-  BaseAudioContextTestPlatform m_testPlatform;
 };
 
 TEST_F(BaseAudioContextTest, AutoplayMetrics_NoRestriction) {
+  ScopedTestingPlatformSupport<BaseAudioContextTestPlatform> platform;
   HistogramTester histogramTester;
 
   BaseAudioContext* audioContext =
       BaseAudioContext::create(document(), ASSERT_NO_EXCEPTION);
   recordAutoplayStatus(audioContext);
 
   histogramTester.expectTotalCount(kCrossOriginMetric, 0);
 }
 
 TEST_F(BaseAudioContextTest, AutoplayMetrics_CreateNoGesture) {
+  ScopedTestingPlatformSupport<BaseAudioContextTestPlatform> platform;
   HistogramTester histogramTester;
   createChildFrame();
   childDocument().settings()->setMediaPlaybackRequiresUserGesture(true);
 
   BaseAudioContext* audioContext =
       BaseAudioContext::create(childDocument(), ASSERT_NO_EXCEPTION);
   recordAutoplayStatus(audioContext);
 
   histogramTester.expectBucketCount(kCrossOriginMetric,
                                     AutoplayStatus::AutoplayStatusFailed, 1);
   histogramTester.expectTotalCount(kCrossOriginMetric, 1);
 }
 
 TEST_F(BaseAudioContextTest, AutoplayMetrics_CallResumeNoGesture) {
+  ScopedTestingPlatformSupport<BaseAudioContextTestPlatform> platform;
   HistogramTester histogramTester;
   createChildFrame();
   childDocument().settings()->setMediaPlaybackRequiresUserGesture(true);
 
   ScriptState::Scope scope(getScriptStateFrom(childDocument()));
 
   BaseAudioContext* audioContext =
       BaseAudioContext::create(childDocument(), ASSERT_NO_EXCEPTION);
   audioContext->resumeContext(getScriptStateFrom(childDocument()));
   rejectPendingResolvers(audioContext);
   recordAutoplayStatus(audioContext);
 
   histogramTester.expectBucketCount(kCrossOriginMetric,
                                     AutoplayStatus::AutoplayStatusFailed, 1);
   histogramTester.expectTotalCount(kCrossOriginMetric, 1);
 }
 
 TEST_F(BaseAudioContextTest, AutoplayMetrics_CreateGesture) {
+  ScopedTestingPlatformSupport<BaseAudioContextTestPlatform> platform;
   HistogramTester histogramTester;
   createChildFrame();
   childDocument().settings()->setMediaPlaybackRequiresUserGesture(true);
 
   UserGestureIndicator userGestureScope(DocumentUserGestureToken::create(
       &childDocument(), UserGestureToken::NewGesture));
 
   BaseAudioContext* audioContext =
       BaseAudioContext::create(childDocument(), ASSERT_NO_EXCEPTION);
   recordAutoplayStatus(audioContext);
 
   histogramTester.expectBucketCount(kCrossOriginMetric,
                                     AutoplayStatus::AutoplayStatusSucceeded, 1);
   histogramTester.expectTotalCount(kCrossOriginMetric, 1);
 }
 
 TEST_F(BaseAudioContextTest, AutoplayMetrics_CallResumeGesture) {
+  ScopedTestingPlatformSupport<BaseAudioContextTestPlatform> platform;
   HistogramTester histogramTester;
   createChildFrame();
   childDocument().settings()->setMediaPlaybackRequiresUserGesture(true);
 
   ScriptState::Scope scope(getScriptStateFrom(childDocument()));
 
   BaseAudioContext* audioContext =
       BaseAudioContext::create(childDocument(), ASSERT_NO_EXCEPTION);
 
   UserGestureIndicator userGestureScope(DocumentUserGestureToken::create(
       &childDocument(), UserGestureToken::NewGesture));
 
   audioContext->resumeContext(getScriptStateFrom(childDocument()));
   rejectPendingResolvers(audioContext);
   recordAutoplayStatus(audioContext);
 
   histogramTester.expectBucketCount(kCrossOriginMetric,
                                     AutoplayStatus::AutoplayStatusSucceeded, 1);
   histogramTester.expectTotalCount(kCrossOriginMetric, 1);
 }
 
 TEST_F(BaseAudioContextTest, AutoplayMetrics_NodeStartNoGesture) {
+  ScopedTestingPlatformSupport<BaseAudioContextTestPlatform> platform;
   HistogramTester histogramTester;
   createChildFrame();
   childDocument().settings()->setMediaPlaybackRequiresUserGesture(true);
 
   BaseAudioContext* audioContext =
       BaseAudioContext::create(childDocument(), ASSERT_NO_EXCEPTION);
   audioContext->maybeRecordStartAttempt();
   recordAutoplayStatus(audioContext);
 
   histogramTester.expectBucketCount(kCrossOriginMetric,
                                     AutoplayStatus::AutoplayStatusFailed, 1);
   histogramTester.expectTotalCount(kCrossOriginMetric, 1);
 }
 
 TEST_F(BaseAudioContextTest, AutoplayMetrics_NodeStartGesture) {
+  ScopedTestingPlatformSupport<BaseAudioContextTestPlatform> platform;
   HistogramTester histogramTester;
   createChildFrame();
   childDocument().settings()->setMediaPlaybackRequiresUserGesture(true);
 
   BaseAudioContext* audioContext =
       BaseAudioContext::create(childDocument(), ASSERT_NO_EXCEPTION);
 
   UserGestureIndicator userGestureScope(DocumentUserGestureToken::create(
       &childDocument(), UserGestureToken::NewGesture));
   audioContext->maybeRecordStartAttempt();
   recordAutoplayStatus(audioContext);
 
   histogramTester.expectBucketCount(
       kCrossOriginMetric, AutoplayStatus::AutoplayStatusFailedWithStart, 1);
   histogramTester.expectTotalCount(kCrossOriginMetric, 1);
 }
 
 TEST_F(BaseAudioContextTest, AutoplayMetrics_NodeStartNoGestureThenSuccess) {
+  ScopedTestingPlatformSupport<BaseAudioContextTestPlatform> platform;
   HistogramTester histogramTester;
   createChildFrame();
   childDocument().settings()->setMediaPlaybackRequiresUserGesture(true);
 
   ScriptState::Scope scope(getScriptStateFrom(childDocument()));
 
   BaseAudioContext* audioContext =
       BaseAudioContext::create(childDocument(), ASSERT_NO_EXCEPTION);
   audioContext->maybeRecordStartAttempt();
 
   UserGestureIndicator userGestureScope(DocumentUserGestureToken::create(
       &childDocument(), UserGestureToken::NewGesture));
   audioContext->resumeContext(getScriptStateFrom(childDocument()));
   rejectPendingResolvers(audioContext);
   recordAutoplayStatus(audioContext);
 
   histogramTester.expectBucketCount(kCrossOriginMetric,
                                     AutoplayStatus::AutoplayStatusSucceeded, 1);
   histogramTester.expectTotalCount(kCrossOriginMetric, 1);
 }
 
 TEST_F(BaseAudioContextTest, AutoplayMetrics_NodeStartGestureThenSucces) {
+  ScopedTestingPlatformSupport<BaseAudioContextTestPlatform> platform;
   HistogramTester histogramTester;
   createChildFrame();
   childDocument().settings()->setMediaPlaybackRequiresUserGesture(true);
 
   ScriptState::Scope scope(getScriptStateFrom(childDocument()));
 
   BaseAudioContext* audioContext =
       BaseAudioContext::create(childDocument(), ASSERT_NO_EXCEPTION);
 
   UserGestureIndicator userGestureScope(DocumentUserGestureToken::create(
       &childDocument(), UserGestureToken::NewGesture));
   audioContext->maybeRecordStartAttempt();
   audioContext->resumeContext(getScriptStateFrom(childDocument()));
   rejectPendingResolvers(audioContext);
   recordAutoplayStatus(audioContext);
 
   histogramTester.expectBucketCount(kCrossOriginMetric,
                                     AutoplayStatus::AutoplayStatusSucceeded, 1);
   histogramTester.expectTotalCount(kCrossOriginMetric, 1);
 }
 
 }  // namespace blink