Move core/animation timers to frame-specific task runners.

third_party/WebKit/Source/core/animation/CompositorPendingAnimations.h

Index: third_party/WebKit/Source/core/animation/CompositorPendingAnimations.h
diff --git a/third_party/WebKit/Source/core/animation/CompositorPendingAnimations.h b/third_party/WebKit/Source/core/animation/CompositorPendingAnimations.h
index 82e14763c8da7f096d74dbfc9b54b5206cee4757..22fd6c5b60782cd0a7bfc5ee675ebb560f4a902a 100644
--- a/third_party/WebKit/Source/core/animation/CompositorPendingAnimations.h
+++ b/third_party/WebKit/Source/core/animation/CompositorPendingAnimations.h
@@ -33,6 +33,7 @@
 
 #include "core/CoreExport.h"
 #include "core/animation/Animation.h"
+#include "core/dom/TaskRunnerHelper.h"
 #include "platform/Timer.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Vector.h"
@@ -47,8 +48,10 @@ namespace blink {
 class CORE_EXPORT CompositorPendingAnimations final
     : public GarbageCollectedFinalized<CompositorPendingAnimations> {
  public:
-  CompositorPendingAnimations()
-      : m_timer(this, &CompositorPendingAnimations::timerFired),
+  explicit CompositorPendingAnimations(Document& document)
+      : m_timer(TaskRunnerHelper::get(TaskType::UnspecedTimer, &document),
+                this,
+                &CompositorPendingAnimations::timerFired),
         m_compositorGroup(1) {}
 
   void add(Animation*);
@@ -65,7 +68,7 @@ class CORE_EXPORT CompositorPendingAnimations final
 
   HeapVector<Member<Animation>> m_pending;
   HeapVector<Member<Animation>> m_waitingForCompositorAnimationStart;
-  Timer<CompositorPendingAnimations> m_timer;
+  TaskRunnerTimer<CompositorPendingAnimations> m_timer;
   int m_compositorGroup;
 };