Add gpu::MailboxHolder to hold state for a gpu::Mailbox

content/browser/renderer_host/media/desktop_capture_device_aura.cc

 // 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.
 
 #include "content/browser/renderer_host/media/desktop_capture_device_aura.h"
 
 #include "base/logging.h"
 #include "base/timer/timer.h"
 #include "cc/output/copy_output_request.h"
 #include "cc/output/copy_output_result.h"
@@ skipping 242 matching lines @@
     yuv_readback_pipeline_.reset(
         gl_helper->CreateReadbackPipelineYUV(GLHelper::SCALER_QUALITY_FAST,
                                              result_rect.size(),
                                              result_rect,
                                              video_frame->coded_size(),
                                              region_in_frame,
                                              true,
                                              true));
   }
   yuv_readback_pipeline_->ReadbackYUV(
-      texture_mailbox.name(), texture_mailbox.sync_point(), video_frame.get(),
-      base::Bind(&CopyOutputFinishedForVideo, start_time, capture_frame_cb,
+      texture_mailbox.mailbox(),
+      texture_mailbox.sync_point(),
+      video_frame.get(),
+      base::Bind(&CopyOutputFinishedForVideo,
+                 start_time,
+                 capture_frame_cb,
                  base::Passed(&release_callback)));
 }
 
 void DesktopVideoCaptureMachine::OnWindowBoundsChanged(
     aura::Window* window,
     const gfx::Rect& old_bounds,
     const gfx::Rect& new_bounds) {
   DCHECK(desktop_window_ && window == desktop_window_);
 
   // Post task to update capture size on UI thread.
@@ skipping 43 matching lines @@
     scoped_ptr<Client> client) {
   DVLOG(1) << "Allocating " << params.requested_format.frame_size.ToString();
   impl_->AllocateAndStart(params, client.Pass());
 }
 
 void DesktopCaptureDeviceAura::StopAndDeAllocate() {
   impl_->StopAndDeAllocate();
 }
 
 }  // namespace content