Make document.activeElement work with OOPIF

content/browser/frame_host/render_frame_proxy_host.h

 // Copyright 2014 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_BROWSER_FRAME_HOST_RENDER_FRAME_PROXY_HOST_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_PROXY_HOST_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "content/browser/frame_host/render_frame_host_impl.h"
 #include "content/browser/site_instance_impl.h"
@@ skipping 93 matching lines @@
 
   CrossProcessFrameConnector* cross_process_frame_connector() {
     return cross_process_frame_connector_.get();
   }
 
   // Update the frame's opener in the renderer process in response to the
   // opener being modified (e.g., with window.open or being set to null) in
   // another renderer process.
   void UpdateOpener();
 
+  // Set this proxy as the focused frame in the renderer process.  This is
+  // called to replicate the focused frame when a frame in a different process
+  // becomes focused.
+  void SetFocusedFrame();
+
   void set_render_frame_proxy_created(bool created) {
     render_frame_proxy_created_ = created;
   }
 
   // Returns if the RenderFrameProxy for this host is alive.
   bool is_render_frame_proxy_live() { return render_frame_proxy_created_; }
 
  private:
   // IPC Message handlers.
   void OnDetach();
@@ skipping 33 matching lines @@
   // kept alive as long as any RenderFrameHosts or RenderFrameProxyHosts
   // are associated with it.
   RenderViewHostImpl* render_view_host_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameProxyHost);
 };
 
 }  // namespace
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_PROXY_HOST_H_