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

content/browser/renderer_host/media/video_capture_buffer_pool.h

 // Copyright (c) 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_BUFFER_POOL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_BUFFER_POOL_H_
 
 #include <map>
 
 #include "base/basictypes.h"
@@ skipping 35 matching lines @@
   static const int kInvalidId;
 
   // Abstraction of a pool's buffer data buffer and size for clients.
   class BufferHandle {
    public:
     virtual ~BufferHandle() {}
     virtual size_t size() const = 0;
     virtual void* data() = 0;
     virtual gfx::GpuMemoryBufferType GetType() = 0;
     virtual ClientBuffer AsClientBuffer() = 0;
+    virtual base::PlatformFile AsPlatformFile() = 0;
   };
 
   explicit VideoCaptureBufferPool(int count);
 
   // One-time (per client/per-buffer) initialization to share a particular
   // buffer to a process. The size of the allocation is returned as
   // |memory_size|.
   base::SharedMemoryHandle ShareToProcess(int buffer_id,
                                           base::ProcessHandle process_handle,
                                           size_t* memory_size);
@@ skipping 97 matching lines @@
   // The buffers, indexed by the first parameter, a buffer id.
   using TrackerMap = std::map<int, Tracker*>;
   TrackerMap trackers_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(VideoCaptureBufferPool);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_BUFFER_POOL_H_