Unify VideoCodecType to/from string functionality

webrtc/modules/video_coding/codecs/test/videoprocessor.cc

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 385 matching lines @@
     case kExcludeOnlyFirstKeyFrame:
       return "ExcludeOnlyFirstKeyFrame";
     case kExcludeAllKeyFrames:
       return "ExcludeAllKeyFrames";
     default:
       RTC_NOTREACHED();
       return "Unknown";
   }
 }
 
-const char* VideoCodecTypeToStr(webrtc::VideoCodecType e) {
-  switch (e) {
-    case kVideoCodecVP8:
-      return "VP8";
-    case kVideoCodecI420:
-      return "I420";
-    case kVideoCodecRED:
-      return "RED";
-    case kVideoCodecULPFEC:
-      return "ULPFEC";
-    case kVideoCodecUnknown:
-      return "Unknown";
-    default:
-      RTC_NOTREACHED();
-      return "Unknown";
-  }
-}
-
 // Callbacks
 EncodedImageCallback::Result
 VideoProcessorImpl::VideoProcessorEncodeCompleteCallback::OnEncodedImage(
     const EncodedImage& encoded_image,
     const webrtc::CodecSpecificInfo* codec_specific_info,
     const webrtc::RTPFragmentationHeader* fragmentation) {
   // Forward to parent class.
   RTC_CHECK(codec_specific_info);
   video_processor_->FrameEncoded(codec_specific_info->codecType,
                                  encoded_image,
                                  fragmentation);
   return Result(Result::OK, 0);
 }
 int32_t VideoProcessorImpl::VideoProcessorDecodeCompleteCallback::Decoded(
     VideoFrame& image) {
   // Forward to parent class.
   video_processor_->FrameDecoded(image);
   return 0;
 }
 
 }  // namespace test
 }  // namespace webrtc