Schedule bitmap animation timers on the compositor task runner.

third_party/WebKit/Source/platform/graphics/BitmapImageTest.cpp

Index: third_party/WebKit/Source/platform/graphics/BitmapImageTest.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/BitmapImageTest.cpp b/third_party/WebKit/Source/platform/graphics/BitmapImageTest.cpp
index 493d5d77616cb58efb3800e06ed5c6ab6e676190..db7a53ef6050a2de44ec5bcd6b54970f0b83212a 100644
--- a/third_party/WebKit/Source/platform/graphics/BitmapImageTest.cpp
+++ b/third_party/WebKit/Source/platform/graphics/BitmapImageTest.cpp
@@ -35,6 +35,7 @@
 #include "platform/graphics/DeferredImageDecoder.h"
 #include "platform/graphics/ImageObserver.h"
 #include "platform/testing/HistogramTester.h"
+#include "platform/testing/TestingPlatformSupport.h"
 #include "platform/testing/UnitTestHelpers.h"
 #include "platform/wtf/StdLibExtras.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -139,6 +140,8 @@ class BitmapImageTest : public ::testing::Test {
 
   Persistent<FakeImageObserver> image_observer_;
   RefPtr<BitmapImage> image_;
+  ScopedTestingPlatformSupport<TestingPlatformSupportWithMockScheduler>
+      platform_;
 };
 
 TEST_F(BitmapImageTest, destroyDecodedData) {