Fullscreen: make fullscreen requests come from RenderFrame

content/browser/frame_host/render_frame_host_delegate.h

Index: content/browser/frame_host/render_frame_host_delegate.h
diff --git a/content/browser/frame_host/render_frame_host_delegate.h b/content/browser/frame_host/render_frame_host_delegate.h
index 57b2ad428f4b1d733b41471098030f3672792fc0..b785fedc9de938b5a3c6e9d39a7ef1db35b4b9a1 100644
--- a/content/browser/frame_host/render_frame_host_delegate.h
+++ b/content/browser/frame_host/render_frame_host_delegate.h
@@ -155,6 +155,13 @@ class CONTENT_EXPORT RenderFrameHostDelegate {
   // Gets the GeolocationServiceContext associated with this delegate.
   virtual GeolocationServiceContext* GetGeolocationServiceContext();
 
+  // Notification that the frame wants to go into fullscreen mode.
+  // |origin| represents the origin of the frame that requests fullscreen.
+  virtual void EnterFullscreenMode(const GURL& origin) {}
+
+  // Notification that the frame wants to go out of fullscreen mode.
+  virtual void ExitFullscreenMode() {}
+
 #if defined(OS_WIN)
   // Returns the frame's parent's NativeViewAccessible.
   virtual gfx::NativeViewAccessible GetParentNativeViewAccessible();