Revert of Add Jpeg frame writer for test support.

webrtc/test/testsupport/frame_writer.h

Index: webrtc/test/testsupport/frame_writer.h
diff --git a/webrtc/test/testsupport/frame_writer.h b/webrtc/test/testsupport/frame_writer.h
index 148f23338cec42223b015e9c165a9aca5be293d1..76298498ac68bc27ae407316639c0e36c75fb52d 100644
--- a/webrtc/test/testsupport/frame_writer.h
+++ b/webrtc/test/testsupport/frame_writer.h
@@ -15,7 +15,6 @@
 
 #include <string>
 
-#include "webrtc/api/video/video_frame.h"
 #include "webrtc/typedefs.h"
 
 namespace webrtc {
@@ -83,20 +82,6 @@
   const int frame_rate_;
 };
 
-// LibJpeg is not available on iOS
-#if !defined(is_ios)
-class JpegFrameWriter {
- public:
-  JpegFrameWriter(const std::string &output_filename);
-  bool WriteFrame(const VideoFrame& input_frame, int quality);
-
- private:
-  bool frame_written_;
-  const std::string output_filename_;
-  FILE* output_file_;
-};
-#endif
-
 }  // namespace test
 }  // namespace webrtc