Rename Maybe to Optional

webrtc/modules/audio_coding/main/acm2/acm_receiver.cc

 /*
  *  Copyright (c) 2013 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 295 matching lines @@
 }
 
 int32_t AcmReceiver::AddCodec(int acm_codec_id,
                               uint8_t payload_type,
                               int channels,
                               int sample_rate_hz,
                               AudioDecoder* audio_decoder) {
   const auto neteq_decoder = [acm_codec_id, channels]() -> NetEqDecoder {
     if (acm_codec_id == -1)
       return NetEqDecoder::kDecoderArbitrary;  // External decoder.
-    const rtc::Maybe<RentACodec::CodecId> cid =
+    const rtc::Optional<RentACodec::CodecId> cid =
         RentACodec::CodecIdFromIndex(acm_codec_id);
     RTC_DCHECK(cid) << "Invalid codec index: " << acm_codec_id;
-    const rtc::Maybe<NetEqDecoder> ned =
+    const rtc::Optional<NetEqDecoder> ned =
         RentACodec::NetEqDecoderFromCodecId(*cid, channels);
     RTC_DCHECK(ned) << "Invalid codec ID: " << static_cast<int>(*cid);
     return *ned;
   }();
 
   CriticalSectionScoped lock(crit_sect_.get());
 
   // The corresponding NetEq decoder ID.
   // If this codec has been registered before.
   auto it = decoders_.find(payload_type);
@@ skipping 209 matching lines @@
 
 void AcmReceiver::GetDecodingCallStatistics(
     AudioDecodingCallStats* stats) const {
   CriticalSectionScoped lock(crit_sect_.get());
   *stats = call_stats_.GetDecodingStatistics();
 }
 
 }  // namespace acm2
 
 }  // namespace webrtc