Add defaulted move constructors for some types that just got copy constructors

webrtc/modules/audio_coding/codecs/audio_encoder.h

 /*
  *  Copyright (c) 2014 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 28 matching lines @@
   // |payload_type|. If the packet contains redundant encodings, the |redundant|
   // vector will be populated with EncodedInfoLeaf structs. Each struct in the
   // vector represents one encoding; the order of structs in the vector is the
   // same as the order in which the actual payloads are written to the byte
   // stream. When EncoderInfoLeaf structs are present in the vector, the main
   // struct's |encoded_bytes| will be the sum of all the |encoded_bytes| in the
   // vector.
   struct EncodedInfo : public EncodedInfoLeaf {
     EncodedInfo();
     EncodedInfo(const EncodedInfo&);
+    EncodedInfo(EncodedInfo&&);
     ~EncodedInfo();
+    EncodedInfo& operator=(const EncodedInfo&);
+    EncodedInfo& operator=(EncodedInfo&&);
 
     std::vector<EncodedInfoLeaf> redundant;
   };
 
   virtual ~AudioEncoder() = default;
 
   // Returns the input sample rate in Hz and the number of input channels.
   // These are constants set at instantiation time.
   virtual int SampleRateHz() const = 0;
   virtual size_t NumChannels() const = 0;
@@ skipping 77 matching lines @@
   // This function is deprecated. It was used to return the maximum number of
   // bytes that can be produced by the encoder at each Encode() call.  Since the
   // Encode interface was changed to use rtc::Buffer, this is no longer
   // applicable. It is only kept in to avoid breaking subclasses that still have
   // it implemented (with the override attribute). It will be removed as soon
   // as these subclasses have been given a chance to change.
   virtual size_t MaxEncodedBytes() const;
 };
 }  // namespace webrtc
 #endif  // WEBRTC_MODULES_AUDIO_CODING_CODECS_AUDIO_ENCODER_H_