Pass GpuMemoryBuffer backed VideoFrame from browser to renderer processes

content/browser/renderer_host/media/video_capture_host.cc

 // 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.
 
 #include "content/browser/renderer_host/media/video_capture_host.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/browser/browser_main_loop.h"
@@ skipping 48 matching lines @@
                                        base::SharedMemoryHandle handle,
                                        int length,
                                        int buffer_id) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   if (entries_.find(controller_id) == entries_.end())
     return;
 
   Send(new VideoCaptureMsg_NewBuffer(controller_id, handle, length, buffer_id));
 }
 
+void VideoCaptureHost::OnBufferCreated2(
+    VideoCaptureControllerID controller_id,
+    const std::vector<gfx::GpuMemoryBufferHandle>& gmb_handles,

[reveman, 2015/08/26 11:54:04]

nit: s/gmb_handles/handles/

[emircan, 2015/08/26 21:23:11]

Done.

+    const gfx::Size& size,
+    int buffer_id) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  if (entries_.find(controller_id) == entries_.end())

[reveman, 2015/08/26 11:54:04]

can this be a DCHECK?

[emircan, 2015/08/26 21:23:11]

I read through and it all goes down to this CL [0], and it looks like they are
trying to avoid some race conditions. I will try this in a seperate CL and see
how bots react.

[0] https://chromiumcodereview.appspot.com/10537057

[reveman, 2015/08/27 00:21:24]

Sounds good. Thanks.

+    return;
+
+  Send(new VideoCaptureMsg_NewBuffer2(controller_id, gmb_handles, size,
+                                      buffer_id));
+}
+
 void VideoCaptureHost::OnBufferDestroyed(VideoCaptureControllerID controller_id,
                                          int buffer_id) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   if (entries_.find(controller_id) == entries_.end())
     return;
 
   Send(new VideoCaptureMsg_FreeBuffer(controller_id, buffer_id));
 }
 
 void VideoCaptureHost::OnBufferReady(
@@ skipping 240 matching lines @@
     return;
 
   if (it->second) {
     media_stream_manager_->video_capture_manager()->StopCaptureForClient(
         it->second.get(), controller_id, this, on_error);
   }
   entries_.erase(it);
 }
 
 }  // namespace content