MJPEG acceleration for video capture using VAAPI

content/browser/renderer_host/media/video_capture_buffer_pool.cc

Index: content/browser/renderer_host/media/video_capture_buffer_pool.cc
diff --git a/content/browser/renderer_host/media/video_capture_buffer_pool.cc b/content/browser/renderer_host/media/video_capture_buffer_pool.cc
index c5298c1d6cae8dd8cf9315fbf3ad164124281505..9883ff55b725f6b4420e54bc66abfa2239bdc1dc 100644
--- a/content/browser/renderer_host/media/video_capture_buffer_pool.cc
+++ b/content/browser/renderer_host/media/video_capture_buffer_pool.cc
@@ -41,16 +41,19 @@ VideoFrame::Format VideoPixelFormatToVideoFrameFormat(
 // A simple holder of a memory-backed buffer and accesors to it.
 class SimpleBufferHandle final : public VideoCaptureBufferPool::BufferHandle {
  public:
-  SimpleBufferHandle(void* data, size_t size) : data_(data), size_(size) {}
+  SimpleBufferHandle(void* data, size_t size, base::SharedMemoryHandle handle)
+      : data_(data), size_(size), handle_(handle) {}
   ~SimpleBufferHandle() override {}
 
   size_t size() const override { return size_; }
   void* data() override { return data_; }
   ClientBuffer AsClientBuffer() override { return nullptr; }
+  base::SharedMemoryHandle AsPlatformHandle() override { return handle_; }
 
  private:
   void* const data_;
   const size_t size_;
+  base::SharedMemoryHandle handle_;
 };
 
 // A holder of a GpuMemoryBuffer-backed buffer, Map()ed on ctor and Unmap()ed on
@@ -73,6 +76,9 @@ class GpuMemoryBufferBufferHandle
   size_t size() const override { return size_; }
   void* data() override { return data_[0]; }
   ClientBuffer AsClientBuffer() override { return gmb_->AsClientBuffer(); }
+  base::SharedMemoryHandle AsPlatformHandle() override {
+    return gmb_->GetHandle().handle;
+  }
 
  private:
   gfx::GpuMemoryBuffer* const gmb_;
@@ -89,8 +95,8 @@ class VideoCaptureBufferPool::SharedMemTracker final : public Tracker {
   size_t mapped_size() const override { return shared_memory_.mapped_size(); }
 
   scoped_ptr<BufferHandle> GetBufferHandle() override {
-    return make_scoped_ptr(
-        new SimpleBufferHandle(shared_memory_.memory(), mapped_size()));
+    return make_scoped_ptr(new SimpleBufferHandle(
+        shared_memory_.memory(), mapped_size(), shared_memory_.handle()));
   }
 
   bool ShareToProcess(base::ProcessHandle process_handle,