Use gpu::Mailbox in IPCs instead of std::string

content/browser/browser_plugin/browser_plugin_embedder.h

 // 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.
 
 // A BrowserPluginEmbedder handles messages coming from a BrowserPlugin's
 // embedder that are not directed at any particular existing guest process.
 // In the beginning, when a BrowserPlugin instance in the embedder renderer
 // process requests an initial navigation, the WebContents for that renderer
 // renderer creates a BrowserPluginEmbedder for itself. The
 // BrowserPluginEmbedder, in turn, forwards the requests to a
 // BrowserPluginGuestManager, which creates and manages the lifetime of the new
 // guest.
 
 #ifndef CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_EMBEDDER_H_
 #define CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_EMBEDDER_H_
 
 #include <map>
 
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_observer.h"
 
 struct BrowserPluginHostMsg_CreateGuest_Params;
 struct BrowserPluginHostMsg_ResizeGuest_Params;
 
 namespace gfx {
 class Point;
 }
 
+namespace gpu {

[alexst (slow to review), 2013/03/06 21:54:27]

We shouldn't need this here, it's not referenced anywhere in the file.

+struct Mailbox;
+}
+
 namespace content {
 
 class BrowserPluginGuestManager;
 class BrowserPluginHostFactory;
 class WebContentsImpl;
 
 class CONTENT_EXPORT BrowserPluginEmbedder : public WebContentsObserver {
  public:
   virtual ~BrowserPluginEmbedder();
 
@@ skipping 46 matching lines @@
   GetRenderViewHostCallbackMap pending_get_render_view_callbacks_;
   // Next request id for BrowserPluginMsg_PluginAtPositionRequest query.
   int next_get_render_view_request_id_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserPluginEmbedder);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_EMBEDDER_H_