Revert of Add EncodedImageCallback::OnEncodedImage().

webrtc/modules/video_coding/generic_encoder.h

Index: webrtc/modules/video_coding/generic_encoder.h
diff --git a/webrtc/modules/video_coding/generic_encoder.h b/webrtc/modules/video_coding/generic_encoder.h
index 9b5d2e62eb29814e555342fe4817491b00b4ab4c..9f73f36e5d6e5e153ff13c5db2a365bfdc28ae07 100644
--- a/webrtc/modules/video_coding/generic_encoder.h
+++ b/webrtc/modules/video_coding/generic_encoder.h
@@ -41,10 +41,9 @@
   virtual ~VCMEncodedFrameCallback();
 
   // Implements EncodedImageCallback.
-  EncodedImageCallback::Result OnEncodedImage(
-      const EncodedImage& encoded_image,
-      const CodecSpecificInfo* codec_specific_info,
-      const RTPFragmentationHeader* fragmentation) override;
+  int32_t Encoded(const EncodedImage& encoded_image,
+                  const CodecSpecificInfo* codec_specific,
+                  const RTPFragmentationHeader* fragmentation_header) override;
   void SetInternalSource(bool internal_source) {
     internal_source_ = internal_source;
   }