Add support for entering/exiting HTML fullscreen from OOPIFs.

content/renderer/render_frame_impl.h

 // Copyright 2013 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.
 
 #ifndef CONTENT_RENDERER_RENDER_FRAME_IMPL_H_
 #define CONTENT_RENDERER_RENDER_FRAME_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 752 matching lines @@
   void OnReloadLoFiImages();
   void OnTextSurroundingSelectionRequest(uint32_t max_length);
   void OnSetAccessibilityMode(AccessibilityMode new_mode);
   void OnSnapshotAccessibilityTree(int callback_id);
   void OnUpdateOpener(int opener_routing_id);
   void OnDidUpdateSandboxFlags(blink::WebSandboxFlags flags);
   void OnSetFrameOwnerProperties(
       const blink::WebFrameOwnerProperties& frame_owner_properties);
   void OnAdvanceFocus(blink::WebFocusType type, int32_t source_routing_id);
   void OnSetFocusedFrame();
+  void OnWillEnterFullscreen(int fullscreen_frame_routing_id);
   void OnTextTrackSettingsChanged(
       const FrameMsg_TextTrackSettings_Params& params);
   void OnPostMessageEvent(const FrameMsg_PostMessage_Params& params);
   void OnCommitNavigation(const ResourceResponseHead& response,
                           const GURL& stream_url,
                           const CommonNavigationParams& common_params,
                           const RequestNavigationParams& request_params);
   void OnFailedNavigation(const CommonNavigationParams& common_params,
                           const RequestNavigationParams& request_params,
                           bool has_stale_copy_in_cache,
@@ skipping 423 matching lines @@
   FrameBlameContext* blame_context_;  // Not owned.
 
   base::WeakPtrFactory<RenderFrameImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_FRAME_IMPL_H_