TestingPlatformSupport: register Platform instance correctly

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

Index: third_party/WebKit/Source/modules/compositorworker/AnimationWorkletThreadTest.cpp
diff --git a/third_party/WebKit/Source/modules/compositorworker/AnimationWorkletThreadTest.cpp b/third_party/WebKit/Source/modules/compositorworker/AnimationWorkletThreadTest.cpp
index 551005152cb1f4df5feb938782ca4236a1c40ae8..bff5c00b75f2843cb7f30e6d52ae7f5216fe4728 100644
--- a/third_party/WebKit/Source/modules/compositorworker/AnimationWorkletThreadTest.cpp
+++ b/third_party/WebKit/Source/modules/compositorworker/AnimationWorkletThreadTest.cpp
@@ -128,10 +128,11 @@ class AnimationWorkletThreadTest : public ::testing::Test {
 
   RefPtr<SecurityOrigin> m_securityOrigin;
   std::unique_ptr<WorkerReportingProxy> m_reportingProxy;
-  AnimationWorkletTestPlatform m_testPlatform;
 };
 
 TEST_F(AnimationWorkletThreadTest, Basic) {
+  ScopedTestingPlatformSupport<AnimationWorkletTestPlatform> platform;
+
   std::unique_ptr<AnimationWorkletThread> worklet =
       createAnimationWorkletThread();
   checkWorkletCanExecuteScript(worklet.get());
@@ -141,6 +142,8 @@ TEST_F(AnimationWorkletThreadTest, Basic) {
 // Tests that the same WebThread is used for new worklets if the WebThread is
 // still alive.
 TEST_F(AnimationWorkletThreadTest, CreateSecondAndTerminateFirst) {
+  ScopedTestingPlatformSupport<AnimationWorkletTestPlatform> platform;
+
   // Create the first worklet and wait until it is initialized.
   std::unique_ptr<AnimationWorkletThread> firstWorklet =
       createAnimationWorkletThread();
@@ -176,6 +179,8 @@ TEST_F(AnimationWorkletThreadTest, CreateSecondAndTerminateFirst) {
 // Tests that a new WebThread is created if all existing worklets are
 // terminated before a new worklet is created.
 TEST_F(AnimationWorkletThreadTest, TerminateFirstAndCreateSecond) {
+  ScopedTestingPlatformSupport<AnimationWorkletTestPlatform> platform;
+
   // Create the first worklet, wait until it is initialized, and terminate it.
   std::unique_ptr<AnimationWorkletThread> worklet =
       createAnimationWorkletThread();
@@ -200,6 +205,8 @@ TEST_F(AnimationWorkletThreadTest, TerminateFirstAndCreateSecond) {
 // Tests that v8::Isolate and WebThread are correctly set-up if a worklet is
 // created while another is terminating.
 TEST_F(AnimationWorkletThreadTest, CreatingSecondDuringTerminationOfFirst) {
+  ScopedTestingPlatformSupport<AnimationWorkletTestPlatform> platform;
+
   std::unique_ptr<AnimationWorkletThread> firstWorklet =
       createAnimationWorkletThread();
   checkWorkletCanExecuteScript(firstWorklet.get());