VideoCaptureDeviceLinux: Add support for SPLANE+DMABUF V4L2 type capture

content/browser/renderer_host/media/video_capture_device_client.cc

Index: content/browser/renderer_host/media/video_capture_device_client.cc
diff --git a/content/browser/renderer_host/media/video_capture_device_client.cc b/content/browser/renderer_host/media/video_capture_device_client.cc
index b739aca1967fb8176190fb2f9b0c7272d542623d..283aea3ef53cb3a1ccbba4b51bdf371453effd75 100644
--- a/content/browser/renderer_host/media/video_capture_device_client.cc
+++ b/content/browser/renderer_host/media/video_capture_device_client.cc
@@ -120,6 +120,9 @@ class AutoReleaseBuffer : public media::VideoCaptureDevice::Client::Buffer {
   gfx::GpuMemoryBufferType GetType() override {
     return buffer_handle_->GetType();
   }
+  base::PlatformFile AsPlatformFile() const override {
+    return base::PlatformFile();
+  }
   ClientBuffer AsClientBuffer() override {
     return buffer_handle_->AsClientBuffer();
   }
@@ -418,7 +421,8 @@ VideoCaptureDeviceClient::ReserveOutputBuffer(media::VideoPixelFormat format,
                                               const gfx::Size& dimensions) {
   DCHECK(format == media::PIXEL_FORMAT_I420 ||
          format == media::PIXEL_FORMAT_TEXTURE ||
-         format == media::PIXEL_FORMAT_GPUMEMORYBUFFER);
+         format == media::PIXEL_FORMAT_GPUMEMORYBUFFER)
+         << "format " << media::VideoCaptureFormat::PixelFormatToString(format);
   DCHECK_GT(dimensions.width(), 0);
   DCHECK_GT(dimensions.height(), 0);