FakeVideoCaptureDevice: add support for capturing into Dma-Bufs using VGEM in CrOs

content/browser/renderer_host/media/video_capture_device_client.cc

 // Copyright 2015 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_device_client.h"
 
 #include "base/bind.h"
 #include "base/strings/stringprintf.h"
 #include "base/trace_event/trace_event.h"
 #include "content/browser/compositor/image_transport_factory.h"
@@ skipping 105 matching lines @@
   }
   int id() const override { return id_; }
   size_t size() const override { return buffer_handle_->size(); }
   void* data() override { return buffer_handle_->data(); }
   gfx::GpuMemoryBufferType GetType() override {
     return buffer_handle_->GetType();
   }
   ClientBuffer AsClientBuffer() override {
     return buffer_handle_->AsClientBuffer();
   }
+  base::PlatformFile AsPlatformFile() override {
+    return buffer_handle_->AsPlatformFile();
+  }
 
  private:
   ~AutoReleaseBuffer() override { pool_->RelinquishProducerReservation(id_); }
 
   const int id_;
   const scoped_refptr<VideoCaptureBufferPool> pool_;
   const scoped_ptr<VideoCaptureBufferPool::BufferHandle> buffer_handle_;
 };
 
 // Internal ref-counted class wrapping an incoming GpuMemoryBuffer into a
@@ skipping 531 matching lines @@
 void VideoCaptureDeviceClient::TextureWrapHelper::OnError(
     const std::string& message) {
   DCHECK(capture_task_runner_->BelongsToCurrentThread());
   DLOG(ERROR) << message;
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&VideoCaptureController::DoErrorOnIOThread, controller_));
 }
 
 }  // namespace content