Deprecate VideoDecoder::Reset() and remove calls.

webrtc/modules/video_coding/generic_decoder.h

Index: webrtc/modules/video_coding/generic_decoder.h
diff --git a/webrtc/modules/video_coding/generic_decoder.h b/webrtc/modules/video_coding/generic_decoder.h
index 67ceabfc5382278ad83bd6c4bde31ec6ab8433ff..2d0007be81136102221d39ff2a5ff32eebb4ca8a 100644
--- a/webrtc/modules/video_coding/generic_decoder.h
+++ b/webrtc/modules/video_coding/generic_decoder.h
@@ -84,11 +84,6 @@ class VCMGenericDecoder {
   int32_t Release();
 
   /**
-  * Reset the decoder state, prepare for a new call
-  */
-  int32_t Reset();
-
-  /**
   * Set decode callback. Deregistering while decoding is illegal.
   */
   int32_t RegisterDecodeCompleteCallback(VCMDecodedFrameCallback* callback);