Pass GpuMemoryBuffer backed VideoFrame from browser to renderer processes

media/capture/content/thread_safe_capture_oracle.cc

 // Copyright 2014 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 "media/capture/content/thread_safe_capture_oracle.h"
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 101 matching lines @@
   }
   const int frame_number = oracle_.RecordCapture(attenuated_utilization);
   TRACE_EVENT_ASYNC_BEGIN2("gpu.capture", "Capture", output_buffer.get(),
                            "frame_number", frame_number, "trigger", event_name);
   // Texture frames wrap a texture mailbox, which we don't have at the moment.
   // We do not construct those frames.
   if (params_.requested_format.pixel_storage != media::PIXEL_STORAGE_TEXTURE) {
     *storage = VideoFrame::WrapExternalData(
         media::PIXEL_FORMAT_I420, coded_size, gfx::Rect(visible_size),
         visible_size, static_cast<uint8*>(output_buffer->data()),
-        output_buffer->size(), base::TimeDelta());
+        output_buffer->mapped_size(), base::TimeDelta());
     DCHECK(*storage);
   }
   *callback =
       base::Bind(&ThreadSafeCaptureOracle::DidCaptureFrame, this, frame_number,
                  base::Passed(&output_buffer), capture_begin_time,
                  oracle_.estimated_frame_duration());
   return true;
 }
 
 gfx::Size ThreadSafeCaptureOracle::GetCaptureSize() const {
@@ skipping 61 matching lines @@
   // destructor.  |metadata| is still valid for read-access at this point.
   double utilization = -1.0;
   if (metadata->GetDouble(media::VideoFrameMetadata::RESOURCE_UTILIZATION,
                           &utilization)) {
     base::AutoLock guard(lock_);
     oracle_.RecordConsumerFeedback(frame_number, utilization);
   }
 }
 
 }  // namespace media