rAF: Introduce FrameRequestCallbackCollection for managing rAF callbacks.

Source/core/dom/FrameRequestCallback.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 10 matching lines @@
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * 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;
 
     int m_id;
     bool m_cancelled;
     bool m_useLegacyTimeBase;
 };
 
 }
 
-#endif // RequestAnimationFrameCallback_h
+#endif // FrameRequestCallback_h