Add distinction between RGB and RGBA native texture video frames and resources

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 "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/timer/timer.h"
 #include "cc/output/copy_output_request.h"
@@ skipping 268 matching lines @@
     scoped_ptr<cc::SingleReleaseCallback> release_callback;
     result->TakeTexture(&texture_mailbox, &release_callback);
     DCHECK(texture_mailbox.IsTexture());
     if (!texture_mailbox.IsTexture())
       return false;
     video_frame = media::VideoFrame::WrapNativeTexture(
         gpu::MailboxHolder(texture_mailbox.mailbox(), texture_mailbox.target(),
                            texture_mailbox.sync_point()),
         base::Bind(&RunSingleReleaseCallback, base::Passed(&release_callback)),
         result->size(), gfx::Rect(result->size()), result->size(),
-        base::TimeDelta(), false);
+        base::TimeDelta(), false /* allow_overlay */, true /* has_alpha */);
     capture_frame_cb.Run(video_frame, start_time, true);
     return true;
   } else {
     DCHECK(video_frame.get());
   }
 
   // Compute the dest size we want after the letterboxing resize. Make the
   // coordinates and sizes even because we letterbox in YUV space
   // (see CopyRGBToVideoFrame). They need to be even for the UV samples to
   // line up correctly.
@@ skipping 140 matching lines @@
   window->GetHost()->compositor()->RemoveObserver(this);
 }
 
 void AuraWindowCaptureMachine::OnCompositingEnded(
     ui::Compositor* compositor) {
   BrowserThread::PostTask(BrowserThread::UI, FROM_HERE, base::Bind(
       &AuraWindowCaptureMachine::Capture, AsWeakPtr(), true));
 }
 
 }  // namespace content