Mac: Plumb AcceleratedWidgetMac through RWHVMac

content/public/browser/render_widget_host_view.h

Index: content/public/browser/render_widget_host_view.h
diff --git a/content/public/browser/render_widget_host_view.h b/content/public/browser/render_widget_host_view.h
index 36f7e78456573110a81cf847a04ca7d9869dd732..b9022881a5fa6ab2eae49d2d766e45155539ac16 100644
--- a/content/public/browser/render_widget_host_view.h
+++ b/content/public/browser/render_widget_host_view.h
@@ -25,6 +25,7 @@ class Size;
 
 namespace ui {
 class TextInputClient;
+class AcceleratedWidgetMac;
 }
 
 namespace content {
@@ -160,6 +161,10 @@ class CONTENT_EXPORT RenderWidgetHostView {
   virtual void EndFrameSubscription() = 0;
 
 #if defined(OS_MACOSX)
+  // Return the accelerated widget which hosts the CALayers that draw the
+  // content of the view in GetNativeView. This may be null.
+  virtual ui::AcceleratedWidgetMac* GetAcceleratedWidgetMac() const = 0;
+
   // Set the view's active state (i.e., tint state of controls).
   virtual void SetActive(bool active) = 0;