GuestView: Fix message routing across embedder navigations

content/browser/frame_host/render_frame_host_delegate.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_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_DELEGATE_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_DELEGATE_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 130 matching lines @@
   virtual bool CheckMediaAccessPermission(const GURL& security_origin,
                                           MediaStreamType type);
 
   // Get the accessibility mode for the WebContents that owns this frame.
   virtual AccessibilityMode GetAccessibilityMode() const;
 
   // Invoked when an accessibility event is received from the renderer.
   virtual void AccessibilityEventReceived(
       const std::vector<AXEventNotificationDetails>& details) {}
 
-  // Find a guest RenderFrameHost by its browser plugin instance id.
+  // Find a guest RenderFrameHost by its parent |render_frame_host| and
+  // |browser_plugin_instance_id|.
   virtual RenderFrameHost* GetGuestByInstanceID(
+      RenderFrameHost* render_frame_host,
       int browser_plugin_instance_id);
 
   // 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();
 #endif
 
  protected:
   virtual ~RenderFrameHostDelegate() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_DELEGATE_H_