Implement Main Thread RAF Aligned Input

content/renderer/render_view_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <memory>
 
@@ skipping 1646 matching lines @@
     FOR_EACH_OBSERVER(RenderViewObserver, observers_, DidStopLoading());
   }
 }
 
 void RenderViewImpl::AttachWebFrameWidget(blink::WebFrameWidget* frame_widget) {
   // The previous WebFrameWidget must already be detached by CloseForFrame().
   DCHECK(!frame_widget_);
   frame_widget_ = frame_widget;
 }
 
+void RenderViewImpl::NeedsMainFrame() {
+  RenderWidgetCompositor* rwc = compositor();
+  if (!rwc)
+    return;
+  rwc->setNeedsBeginFrame();
+}
+
 void RenderViewImpl::SetZoomLevel(double zoom_level) {
   // If we change the zoom level for the view, make sure any subsequent subframe
   // loads reflect the current zoom level.
   page_zoom_level_ = zoom_level;
 
   webview()->setZoomLevel(zoom_level);
   FOR_EACH_OBSERVER(RenderViewObserver, observers_, OnZoomLevelChanged());
 }
 
 void RenderViewImpl::didCancelCompositionOnSelectionChange() {
@@ skipping 1405 matching lines @@
         return render_frame->focused_pepper_plugin();
     }
     frame = frame->traverseNext(false);
   }
 
   return nullptr;
 }
 #endif
 
 }  // namespace content