Remove no-op VideoDecoder::Reset implementation.

webrtc/video_decoder.h

Index: webrtc/video_decoder.h
diff --git a/webrtc/video_decoder.h b/webrtc/video_decoder.h
index 368b846e14af5a62a3cf056a83d3319d989f5a38..e99183fdefe1e023fac7ca364c0fa1f67fe6382e 100644
--- a/webrtc/video_decoder.h
+++ b/webrtc/video_decoder.h
@@ -73,9 +73,6 @@ class VideoDecoder {
       DecodedImageCallback* callback) = 0;
 
   virtual int32_t Release() = 0;
-  // TODO(pbos): Remove, this is no longer called. A no-op implementation is
-  // added here to permit removal elsewhere.
-  virtual int32_t Reset() { return 0; }
 
   // Returns true if the decoder prefer to decode frames late.
   // That is, it can not decode infinite number of frames before the decoded
@@ -142,7 +139,6 @@ class NullVideoDecoder : public VideoDecoder {
       DecodedImageCallback* callback) override;
 
   int32_t Release() override;
-  int32_t Reset() override;
 
   const char* ImplementationName() const override;
 };