TestingPlatformSupport: register Platform instance correctly

third_party/WebKit/Source/modules/compositorworker/CompositorWorkerThreadTest.cpp

 // Copyright 2015 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/compositorworker/CompositorWorkerThread.h"
 
 #include "bindings/core/v8/ScriptSourceCode.h"
 #include "bindings/core/v8/SourceLocation.h"
 #include "bindings/core/v8/V8GCController.h"
 #include "bindings/core/v8/WorkerOrWorkletScriptController.h"
@@ skipping 78 matching lines @@
  private:
   std::unique_ptr<WebThread> m_thread;
   TestingCompositorSupport m_compositorSupport;
 };
 
 }  // namespace
 
 class CompositorWorkerThreadTest : public ::testing::Test {
  public:
   void SetUp() override {
+    m_testPlatform.reset(new CompositorWorkerTestPlatform);
     CompositorWorkerThread::createSharedBackingThreadForTest();
     m_objectProxy = TestCompositorWorkerObjectProxy::create();
     m_securityOrigin =
         SecurityOrigin::create(KURL(ParsedURLString, "http://fake.url/"));
   }
 
   void TearDown() override {
     CompositorWorkerThread::clearSharedBackingThread();
   }
 
@@ skipping 27 matching lines @@
     WorkerOrWorkletScriptController* scriptController =
         worker->globalScope()->scriptController();
     bool evaluateResult = scriptController->evaluate(
         ScriptSourceCode("var counter = 0; ++counter;"));
     DCHECK(evaluateResult);
     waitEvent->signal();
   }
 
   RefPtr<SecurityOrigin> m_securityOrigin;
   std::unique_ptr<InProcessWorkerObjectProxy> m_objectProxy;
-  CompositorWorkerTestPlatform m_testPlatform;
+  ScopedTestingPlatformSupport<CompositorWorkerTestPlatform> m_testPlatform;
 };
 
 TEST_F(CompositorWorkerThreadTest, Basic) {
   std::unique_ptr<CompositorWorkerThread> compositorWorker =
       createCompositorWorker();
   checkWorkerCanExecuteScript(compositorWorker.get());
   compositorWorker->terminateAndWait();
 }
 
 // Tests that the same WebThread is used for new workers if the WebThread is
@@ skipping 78 matching lines @@
   ASSERT_TRUE(secondIsolate);
   EXPECT_EQ(firstIsolate, secondIsolate);
 
   // Verify that the isolate can run some scripts correctly in the second
   // worker.
   checkWorkerCanExecuteScript(secondWorker.get());
   secondWorker->terminateAndWait();
 }
 
 }  // namespace blink