Revert 251207 "Use gpu::Mailbox instead of std:string in IPCs"

trunk/src/content/browser/browser_plugin/browser_plugin_guest.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 BrowserPluginGuest is the browser side of a browser <--> embedder
 // renderer channel. A BrowserPlugin (a WebPlugin) is on the embedder
 // renderer side of browser <--> embedder renderer communication.
 //
 // BrowserPluginGuest lives on the UI thread of the browser process. Any
 // messages about the guest render process that the embedder might be interested
@@ skipping 49 matching lines @@
 }
 
 namespace blink {
 class WebInputEvent;
 }
 
 namespace gfx {
 class Range;
 }
 
-namespace gpu {
-struct Mailbox;
-}
-
 namespace content {
 
 class BrowserPluginHostFactory;
 class BrowserPluginEmbedder;
 class BrowserPluginGuestManager;
 class RenderProcessHost;
 class RenderWidgetHostView;
 class SiteInstance;
 struct DropData;
 struct MediaStreamRequest;
@@ skipping 199 matching lines @@
   void AskEmbedderForGeolocationPermission(int bridge_id,
                                            const GURL& requesting_frame,
                                            const GeolocationCallback& callback);
   // Cancels pending geolocation request.
   void CancelGeolocationRequest(int bridge_id);
 
   // Allow the embedder to call this for unhandled messages when
   // BrowserPluginGuest is already destroyed.
   static void AcknowledgeBufferPresent(int route_id,
                                        int gpu_host_id,
-                                       const gpu::Mailbox& mailbox,
+                                       const std::string& mailbox_name,
                                        uint32 sync_point);
 
   // Returns whether BrowserPluginGuest is interested in receiving the given
   // |message|.
   static bool ShouldForwardToBrowserPluginGuest(const IPC::Message& message);
   gfx::Rect ToGuestRect(const gfx::Rect& rect);
 
   void DragSourceEndedAt(int client_x, int client_y, int screen_x,
       int screen_y, blink::WebDragOperation operation);
 
@@ skipping 312 matching lines @@
   // Weak pointer used to ask GeolocationPermissionContext about geolocation
   // permission.
   base::WeakPtrFactory<BrowserPluginGuest> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserPluginGuest);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_GUEST_H_