Add EncodedImageCallback::OnEncodedImage().

webrtc/modules/video_coding/video_sender_unittest.cc

Index: webrtc/modules/video_coding/video_sender_unittest.cc
diff --git a/webrtc/modules/video_coding/video_sender_unittest.cc b/webrtc/modules/video_coding/video_sender_unittest.cc
index 5324ceeb0b8f5078a8c4849fbe1de975b562a2e4..934b5fa36630a3ef54d4052da955543b36111a78 100644
--- a/webrtc/modules/video_coding/video_sender_unittest.cc
+++ b/webrtc/modules/video_coding/video_sender_unittest.cc
@@ -93,13 +93,13 @@ class EncodedImageCallbackImpl : public EncodedImageCallback {
 
   virtual ~EncodedImageCallbackImpl() {}
 
-  int32_t Encoded(const EncodedImage& encoded_image,
-                  const CodecSpecificInfo* codec_specific_info,
-                  const RTPFragmentationHeader* fragmentation) override {
+  Result OnEncodedImage(const EncodedImage& encoded_image,
+                        const CodecSpecificInfo* codec_specific_info,
+                        const RTPFragmentationHeader* fragmentation) override {
     assert(codec_specific_info);
     frame_data_.push_back(
         FrameData(encoded_image._length, *codec_specific_info));
-    return 0;
+    return Result();
   }
 
   void Reset() {