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

content/browser/renderer_host/render_widget_host_view_aura.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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 42 matching lines @@
 class CopyOutputRequest;
 class CopyOutputResult;
 class DelegatedFrameData;
 }
 
 namespace gfx {
 class Canvas;
 class Display;
 }
 
+namespace gpu {
+struct Mailbox;
+}
+
 namespace ui {
 class CompositorLock;
 class CompositorVSyncManager;
 class InputMethod;
 class LocatedEvent;
 class Texture;
 }
 
 namespace content {
 #if defined(OS_WIN)
@@ skipping 450 matching lines @@
   gfx::Rect ConvertRectFromScreen(const gfx::Rect& rect) const;
 
   typedef base::Callback<void(bool, const scoped_refptr<ui::Texture>&)>
       BufferPresentedCallback;
 
   // The common entry point for buffer updates from renderer
   // and GPU process.
   void BuffersSwapped(const gfx::Size& surface_size,
                       const gfx::Rect& damage_rect,
                       float surface_scale_factor,
-                      const std::string& mailbox_name,
+                      const gpu::Mailbox& mailbox,
                       const std::vector<ui::LatencyInfo>& latency_info,
                       const BufferPresentedCallback& ack_callback);
 
   bool SwapBuffersPrepare(const gfx::Rect& surface_rect,
                           float surface_scale_factor,
                           const gfx::Rect& damage_rect,
-                          const std::string& mailbox_name,
+                          const gpu::Mailbox& mailbox,
                           const BufferPresentedCallback& ack_callback);
 
   void SwapBuffersCompleted(
       const BufferPresentedCallback& ack_callback,
       const scoped_refptr<ui::Texture>& texture_to_return);
 
   void SwapDelegatedFrame(
       uint32 output_surface_id,
       scoped_ptr<cc::DelegatedFrameData> frame_data,
       float frame_device_scale_factor,
@@ skipping 235 matching lines @@
   // etc.
   scoped_ptr<content::LegacyRenderWidgetHostHWND>
       legacy_render_widget_host_HWND_;
 #endif
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAura);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_