rAF: Introduce FrameRequestCallbackCollection for managing rAF callbacks.

Source/core/dom/FrameRequestCallback.h

Index: Source/core/dom/FrameRequestCallback.h
diff --git a/Source/core/dom/RequestAnimationFrameCallback.h b/Source/core/dom/FrameRequestCallback.h
similarity index 86%
rename from Source/core/dom/RequestAnimationFrameCallback.h
rename to Source/core/dom/FrameRequestCallback.h
index b8fd4885d337c57a0fdcaf398896ac769d9885cf..cad77750de5cacdd9e5defeb5830c5b0f61aff4d 100644
--- a/Source/core/dom/RequestAnimationFrameCallback.h
+++ b/Source/core/dom/FrameRequestCallback.h
@@ -28,16 +28,16 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef RequestAnimationFrameCallback_h
-#define RequestAnimationFrameCallback_h
+#ifndef FrameRequestCallback_h
+#define FrameRequestCallback_h
 
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
-class RequestAnimationFrameCallback : public GarbageCollectedFinalized<RequestAnimationFrameCallback> {
+class FrameRequestCallback : public GarbageCollectedFinalized<FrameRequestCallback> {
 public:
-    virtual ~RequestAnimationFrameCallback() { }
+    virtual ~FrameRequestCallback() { }
     DEFINE_INLINE_VIRTUAL_TRACE() { }
     virtual void handleEvent(double highResTimeMs) = 0;
 
@@ -48,4 +48,4 @@ public:
 
 }
 
-#endif // RequestAnimationFrameCallback_h
+#endif // FrameRequestCallback_h