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

media/video/capture/fake_video_capture_device_unittest.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 "base/bind.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/run_loop.h"
 #include "base/test/test_timeouts.h"
 #include "base/threading/thread.h"
 #include "media/base/video_capture_types.h"
@@ skipping 21 matching lines @@
 // This class is a Client::Buffer that allocates and frees the requested |size|.
 class MockBuffer : public VideoCaptureDevice::Client::Buffer {
  public:
   MockBuffer(int buffer_id, size_t size)
       : id_(buffer_id), size_(size), data_(new uint8[size_]) {}
   ~MockBuffer() override { delete[] data_; }
   int id() const override { return id_; }
   size_t size() const override { return size_; }
   void* data() override { return data_; }
   ClientBuffer AsClientBuffer() override { return nullptr; }
+  base::PlatformFile AsPlatformFile() override { return 0; }
 
  private:
   const int id_;
   const size_t size_;
   uint8* const data_;
 };
 
 class MockClient : public VideoCaptureDevice::Client {
  public:
   MOCK_METHOD1(OnError, void(const std::string& reason));
@@ skipping 162 matching lines @@
     EXPECT_EQ(supported_formats[2].pixel_format, PIXEL_FORMAT_I420);
     EXPECT_GE(supported_formats[2].frame_rate, 20.0);
     EXPECT_EQ(supported_formats[3].frame_size.width(), 1920);
     EXPECT_EQ(supported_formats[3].frame_size.height(), 1080);
     EXPECT_EQ(supported_formats[3].pixel_format, PIXEL_FORMAT_I420);
     EXPECT_GE(supported_formats[3].frame_rate, 20.0);
   }
 }
 
 };  // namespace media