Merge 139509

Source/WebCore/page/DOMWindow.cpp

Index: Source/WebCore/page/DOMWindow.cpp
===================================================================
--- Source/WebCore/page/DOMWindow.cpp	(revision 140069)
+++ Source/WebCore/page/DOMWindow.cpp	(working copy)
@@ -1553,11 +1553,20 @@
 #if ENABLE(REQUEST_ANIMATION_FRAME)
 int DOMWindow::requestAnimationFrame(PassRefPtr<RequestAnimationFrameCallback> callback)
 {
+    callback->m_useLegacyTimeBase = false;
     if (Document* d = document())
         return d->requestAnimationFrame(callback);
     return 0;
 }
 
+int DOMWindow::webkitRequestAnimationFrame(PassRefPtr<RequestAnimationFrameCallback> callback)
+{
+    callback->m_useLegacyTimeBase = true;
+    if (Document* d = document())
+        return d->requestAnimationFrame(callback);
+    return 0;
+}
+
 void DOMWindow::cancelAnimationFrame(int id)
 {
     if (Document* d = document())