Revert of Deliver video frames on Android, on the decode thread.

webrtc/video_decoder.h

Index: webrtc/video_decoder.h
diff --git a/webrtc/video_decoder.h b/webrtc/video_decoder.h
index fd487849cebbbd8d58bc51adb66054e99eb1c0a8..70c09129f788908de537b08aa4a68e4c7c42a703 100644
--- a/webrtc/video_decoder.h
+++ b/webrtc/video_decoder.h
@@ -68,13 +68,6 @@
                          const CodecSpecificInfo* codec_specific_info = NULL,
                          int64_t render_time_ms = -1) = 0;
 
-#if defined(WEBRTC_ANDROID)
-  // This is a temporary remedy while the Android capture implementation is
-  // being changed to deliver frames on the decoder thread without polling.
-  // See https://bugs.chromium.org/p/webrtc/issues/detail?id=7361
-  virtual void PollDecodedFrames() {}
-#endif
-
   virtual int32_t RegisterDecodeCompleteCallback(
       DecodedImageCallback* callback) = 0;