VideoCaptureDeviceLinux: Add support for SPLANE+DMABUF V4L2 type capture

media/video/capture/linux/v4l2_capture_delegate_single_plane.h

Index: media/video/capture/linux/v4l2_capture_delegate_single_plane.h
diff --git a/media/video/capture/linux/v4l2_capture_delegate_single_plane.h b/media/video/capture/linux/v4l2_capture_delegate_single_plane.h
index 8d4dc91f5206a2e8bb0a23c5b106768ca7e86bd4..90000d899a0fbd1d49161f5f1af52bf85678141f 100644
--- a/media/video/capture/linux/v4l2_capture_delegate_single_plane.h
+++ b/media/video/capture/linux/v4l2_capture_delegate_single_plane.h
@@ -16,15 +16,13 @@ class SingleThreadTaskRunner;
 namespace media {
 
 // V4L2 specifics for SPLANE API.
-class V4L2CaptureDelegateSinglePlane final : public V4L2CaptureDelegate {
+class V4L2CaptureDelegateSinglePlane : public V4L2CaptureDelegate {
  public:
   V4L2CaptureDelegateSinglePlane(
       const VideoCaptureDevice::Name& device_name,
       const scoped_refptr<base::SingleThreadTaskRunner>& v4l2_task_runner,
-      int power_line_frequency)
-      : V4L2CaptureDelegate(device_name,
-                            v4l2_task_runner,
-                            power_line_frequency) {}
+      int power_line_frequency,
+      bool allow_using_dma_bufs);
 
  private:
   // BufferTracker derivation to implement construction semantics for SPLANE.
@@ -36,7 +34,7 @@ class V4L2CaptureDelegateSinglePlane final : public V4L2CaptureDelegate {
     ~BufferTrackerSPlane() override {}
   };
 
-  ~V4L2CaptureDelegateSinglePlane() override {}
+  ~V4L2CaptureDelegateSinglePlane() override;
 
   // V4L2CaptureDelegate virtual methods implementation.
   scoped_refptr<BufferTracker> CreateBufferTracker() const override;
@@ -44,11 +42,15 @@ class V4L2CaptureDelegateSinglePlane final : public V4L2CaptureDelegate {
                       uint32_t width,
                       uint32_t height,
                       uint32_t pixelformat_fourcc) const override;
-  void FinishFillingV4L2Buffer(v4l2_buffer* buffer) const override;
   void SetPayloadSize(const scoped_refptr<BufferTracker>& buffer_tracker,
                       const v4l2_buffer& buffer) const override;
+  void FinishFillingV4L2Buffer(v4l2_buffer* buffer,
+                               bool for_enqueue) const override;
   void SendBuffer(const scoped_refptr<BufferTracker>& buffer_tracker,
                   const v4l2_format& format) const override;
+
+ private:
+  mutable ScopedVector<VideoCaptureDevice::Client::Buffer> allocated_buffers_;
 };
 
 }  // namespace media