Revert of Add MJPEG support to FakeVideoCaptureDevice

media/capture/video/fake_video_capture_device.h

Index: media/capture/video/fake_video_capture_device.h
diff --git a/media/capture/video/fake_video_capture_device.h b/media/capture/video/fake_video_capture_device.h
index 7919e9f666b095f512a185f3fca1e3e65ebc8e85..c853b4dfde712d2cd5752ea597de844305f6695b 100644
--- a/media/capture/video/fake_video_capture_device.h
+++ b/media/capture/video/fake_video_capture_device.h
@@ -18,11 +18,6 @@
 // on a given target OutputMode and frame rate.
 class CAPTURE_EXPORT FakeVideoCaptureDeviceMaker {
  public:
-  enum class PixelFormat {
-    I420 = media::PIXEL_FORMAT_I420,
-    Y16 = media::PIXEL_FORMAT_Y16,
-    MJPEG = media::PIXEL_FORMAT_MJPEG
-  };
   enum class DeliveryMode {
     USE_DEVICE_INTERNAL_BUFFERS,
     USE_CLIENT_PROVIDED_BUFFERS
@@ -31,7 +26,7 @@
   static void GetSupportedSizes(std::vector<gfx::Size>* supported_sizes);
 
   static std::unique_ptr<VideoCaptureDevice> MakeInstance(
-      PixelFormat pixel_format,
+      VideoPixelFormat pixel_format,
       DeliveryMode delivery_mode,
       float frame_rate);
 };