rAF: Introduce FrameRequestCallbackCollection for managing rAF callbacks.

Source/core/core.gypi

Index: Source/core/core.gypi
diff --git a/Source/core/core.gypi b/Source/core/core.gypi
index 1d43fa5f19d3c43cb0a59ec74acce17931d07dc8..8b80c4a72489b4a24b6c2813fbca93524b6c667c 100644
--- a/Source/core/core.gypi
+++ b/Source/core/core.gypi
@@ -68,6 +68,7 @@
             'dom/Element.idl',
             'dom/Float32Array.idl',
             'dom/Float64Array.idl',
+            'dom/FrameRequestCallback.idl',
             'dom/Int16Array.idl',
             'dom/Int32Array.idl',
             'dom/Int8Array.idl',
@@ -83,7 +84,6 @@
             'dom/NodeList.idl',
             'dom/ProcessingInstruction.idl',
             'dom/Range.idl',
-            'dom/RequestAnimationFrameCallback.idl',
             'dom/StringCallback.idl',
             'dom/Text.idl',
             'dom/Touch.idl',
@@ -2203,6 +2203,9 @@
             'dom/ExecutionContextTask.h',
             'dom/FirstLetterPseudoElement.cpp',
             'dom/FirstLetterPseudoElement.h',
+            'dom/FrameRequestCallback.h',
+            'dom/FrameRequestCallbackCollection.cpp',
+            'dom/FrameRequestCallbackCollection.h',
             'dom/Fullscreen.cpp',
             'dom/Fullscreen.h',
             'dom/GlobalEventHandlers.h',
@@ -2278,7 +2281,6 @@
             'dom/RawDataDocumentParser.h',
             'dom/RemoteSecurityContext.cpp',
             'dom/RemoteSecurityContext.h',
-            'dom/RequestAnimationFrameCallback.h',
             'dom/SandboxFlags.cpp',
             'dom/SandboxFlags.h',
             'dom/ScopedWindowFocusAllowedIndicator.h',