rAF: Introduce FrameRequestCallbackCollection for managing rAF callbacks.

Source/core/frame/RemoteDOMWindow.cpp

Index: Source/core/frame/RemoteDOMWindow.cpp
diff --git a/Source/core/frame/RemoteDOMWindow.cpp b/Source/core/frame/RemoteDOMWindow.cpp
index 9a88e1dddd6f34239c4e6e2a9217222e94b2454e..f803bb492347b6f5a162b943b7fc78f8ce6eb056 100644
--- a/Source/core/frame/RemoteDOMWindow.cpp
+++ b/Source/core/frame/RemoteDOMWindow.cpp
@@ -327,13 +327,13 @@ PassRefPtrWillBeRawPtr<CSSRuleList> RemoteDOMWindow::getMatchedCSSRules(Element*
     return nullptr;
 }
 
-int RemoteDOMWindow::requestAnimationFrame(RequestAnimationFrameCallback*)
+int RemoteDOMWindow::requestAnimationFrame(FrameRequestCallback*)
 {
     ASSERT_NOT_REACHED();
     return 0;
 }
 
-int RemoteDOMWindow::webkitRequestAnimationFrame(RequestAnimationFrameCallback*)
+int RemoteDOMWindow::webkitRequestAnimationFrame(FrameRequestCallback*)
 {
     ASSERT_NOT_REACHED();
     return 0;