A few small cleanups of stuff caught by lint

webrtc/modules/audio_coding/codecs/mock/mock_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.
  */
 
 #ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_MOCK_MOCK_AUDIO_ENCODER_H_
 #define WEBRTC_MODULES_AUDIO_CODING_CODECS_MOCK_MOCK_AUDIO_ENCODER_H_
 
+#include <string>
+
 #include "webrtc/base/array_view.h"
 #include "webrtc/modules/audio_coding/codecs/audio_encoder.h"
 
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace webrtc {
 
 class MockAudioEncoder : public AudioEncoder {
  public:
   ~MockAudioEncoder() override { Die(); }
@@ skipping 18 matching lines @@
   // Note, we explicitly chose not to create a mock for the Encode method.
   MOCK_METHOD3(EncodeImpl,
                EncodedInfo(uint32_t timestamp,
                            rtc::ArrayView<const int16_t> audio,
                            rtc::Buffer* encoded));
 
   class FakeEncoding {
    public:
     // Creates a functor that will return |info| and adjust the rtc::Buffer
     // given as input to it, so it is info.encoded_bytes larger.
-    FakeEncoding(const AudioEncoder::EncodedInfo& info);
+    explicit FakeEncoding(const AudioEncoder::EncodedInfo& info);
 
     // Shorthand version of the constructor above, for when only setting
     // encoded_bytes in the EncodedInfo object matters.
-    FakeEncoding(size_t encoded_bytes);
+    explicit FakeEncoding(size_t encoded_bytes);
 
     AudioEncoder::EncodedInfo operator()(uint32_t timestamp,
                                          rtc::ArrayView<const int16_t> audio,
                                          rtc::Buffer* encoded);
 
    private:
     AudioEncoder::EncodedInfo info_;
   };
 
   class CopyEncoding {
    public:
     // Creates a functor that will return |info| and append the data in the
     // payload to the buffer given as input to it. Up to info.encoded_bytes are
     // appended - make sure the payload is big enough!  Since it uses an
     // ArrayView, it _does not_ copy the payload. Make sure it doesn't fall out
     // of scope!
     CopyEncoding(AudioEncoder::EncodedInfo info,
                  rtc::ArrayView<const uint8_t> payload);
 
     // Shorthand version of the constructor above, for when you wish to append
     // the whole payload and do not care about any EncodedInfo attribute other
     // than encoded_bytes.
-    CopyEncoding(rtc::ArrayView<const uint8_t> payload);
+    explicit CopyEncoding(rtc::ArrayView<const uint8_t> payload);
 
     AudioEncoder::EncodedInfo operator()(uint32_t timestamp,
                                          rtc::ArrayView<const int16_t> audio,
                                          rtc::Buffer* encoded);
+
    private:
     AudioEncoder::EncodedInfo info_;
     rtc::ArrayView<const uint8_t> payload_;
   };
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_CODING_CODECS_MOCK_MOCK_AUDIO_ENCODER_H_