Decouple GLHelper from media

content/browser/media/capture/aura_window_capture_machine.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/media/capture/aura_window_capture_machine.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/logging.h"
@@ skipping 262 matching lines @@
                                              result_rect.size(),
                                              result_rect,
                                              region_in_frame.size(),
                                              true,
                                              true));
   }
 
   cursor_renderer_->SnapshotCursorState(region_in_frame);
   yuv_readback_pipeline_->ReadbackYUV(
       texture_mailbox.mailbox(), texture_mailbox.sync_token(),
-      video_frame.get(), region_in_frame.origin(),
+      video_frame->visible_rect(),
+      video_frame->stride(media::VideoFrame::kYPlane),
+      video_frame->data(media::VideoFrame::kYPlane),
+      video_frame->stride(media::VideoFrame::kUPlane),
+      video_frame->data(media::VideoFrame::kUPlane),
+      video_frame->stride(media::VideoFrame::kVPlane),
+      video_frame->data(media::VideoFrame::kVPlane), region_in_frame.origin(),
       base::Bind(&CopyOutputFinishedForVideo, weak_factory_.GetWeakPtr(),
                  start_time, capture_frame_cb, video_frame,
                  base::Passed(&release_callback)));
+  media::LetterboxYUV(video_frame.get(), region_in_frame);
   return true;
 }
 
 using CaptureFrameCallback =
     media::ThreadSafeCaptureOracle::CaptureFrameCallback;
 
 void AuraWindowCaptureMachine::CopyOutputFinishedForVideo(
     base::WeakPtr<AuraWindowCaptureMachine> machine,
     base::TimeTicks start_time,
     const CaptureFrameCallback& capture_frame_cb,
@@ skipping 59 matching lines @@
   // TODO(miu): The CopyOutputRequest should be made earlier, at WillCommit().
   // http://crbug.com/492839
   BrowserThread::PostTask(
       BrowserThread::UI,
       FROM_HERE,
       base::Bind(&AuraWindowCaptureMachine::Capture, weak_factory_.GetWeakPtr(),
                  true));
 }
 
 }  // namespace content