Remove deprecated methods replaced by GetEncoderInfo

Bug: webrtc:9890
Change-Id: If468bc7001228c55c8c610d1d88444da98365be1
Reviewed-on: https://chromium-review.googlesource.com/c/1338083Reviewed-by: Emircan Uysaler <emircan@chromium.org>
Commit-Queue: Erik Språng <sprang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#608431}

content/renderer/media/webrtc/rtc_video_encoder.cc

@@ -961,14 +961,6 @@ int32_t RTCVideoEncoder::SetRateAllocation(
   return WEBRTC_VIDEO_CODEC_OK;
 }
 
-bool RTCVideoEncoder::SupportsNativeHandle() const {
-  return true;
-}
-
-const char* RTCVideoEncoder::ImplementationName() const {
-  return RTCVideoEncoder::Impl::ImplementationName();
-}
-
 webrtc::VideoEncoder::EncoderInfo RTCVideoEncoder::GetEncoderInfo() const {
   EncoderInfo info;
   info.implementation_name = RTCVideoEncoder::Impl::ImplementationName();

content/renderer/media/webrtc/rtc_video_encoder.h

@@ -59,8 +59,6 @@ class CONTENT_EXPORT RTCVideoEncoder : public webrtc::VideoEncoder {
   int32_t Release() override;
   int32_t SetRateAllocation(const webrtc::VideoBitrateAllocation& allocation,
                             uint32_t framerate) override;
-  bool SupportsNativeHandle() const override;
-  const char* ImplementationName() const override;
   EncoderInfo GetEncoderInfo() const override;
 
  private: