Remove BrowserPlugin's -internal-attach method

content/browser/browser_plugin/browser_plugin_message_filter.cc

 // Copyright (c) 2012 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.
 
 #include "content/browser/browser_plugin/browser_plugin_message_filter.h"
 
 #include "base/supports_user_data.h"
 #include "content/browser/browser_plugin/browser_plugin_guest.h"
 #include "content/browser/gpu/gpu_process_host.h"
 #include "content/browser/web_contents/web_contents_impl.h"
@@ skipping 52 matching lines @@
                                               WebContents* guest_web_contents) {
   if (!guest_web_contents)
     return;
   static_cast<WebContentsImpl*>(guest_web_contents)->GetBrowserPluginGuest()->
       OnMessageReceivedFromEmbedder(message);
 }
 
 void BrowserPluginMessageFilter::ForwardMessageToGuest(
     const IPC::Message& message) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  RenderProcessHostImpl* host = static_cast<RenderProcessHostImpl*>(
-      RenderProcessHost::FromID(render_process_id_));
-  if (!host)
+  RenderViewHost* rvh = RenderViewHost::FromID(render_process_id_,
+                                               message.routing_id());
+  if (!rvh)
     return;
 
-  int instance_id = 0;
+  WebContents* embedder_web_contents = WebContents::FromRenderViewHost(rvh);
+
+  int browser_plugin_instance_id = 0;
   // All allowed messages must have instance_id as their first parameter.
   PickleIterator iter(message);
-  bool success = iter.ReadInt(&instance_id);
+  bool success = iter.ReadInt(&browser_plugin_instance_id);
   DCHECK(success);
-  host->GetBrowserContext()->GetGuestManager()->
+  embedder_web_contents->GetBrowserContext()->GetGuestManager()->
       MaybeGetGuestByInstanceIDOrKill(
-          instance_id,
-          render_process_id_,
+          embedder_web_contents,
+          browser_plugin_instance_id,
           base::Bind(&BrowserPluginGuestMessageCallback,
                      message));
 }
 
 void BrowserPluginMessageFilter::OnSwapBuffersACK(
     const FrameHostMsg_BuffersSwappedACK_Params& params) {
   GpuProcessHost* gpu_host = GpuProcessHost::FromID(params.gpu_host_id);
   if (!gpu_host)
     return;
   AcceleratedSurfaceMsg_BufferPresented_Params ack_params;
   ack_params.mailbox = params.mailbox;
   ack_params.sync_point = params.sync_point;
   gpu_host->Send(new AcceleratedSurfaceMsg_BufferPresented(params.gpu_route_id,
                                                            ack_params));
 }
 
 } // namespace content