Made the AudioProcessing class a pure interface.

webrtc/modules/audio_processing/include/mock_audio_processing.h

 /*
  *  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 241 matching lines @@
       bool());
   MOCK_METHOD1(set_delay_offset_ms,
       void(int offset));
   MOCK_CONST_METHOD0(delay_offset_ms,
       int());
   MOCK_METHOD2(StartDebugRecording,
                int(const char filename[kMaxFilenameSize],
                    int64_t max_log_size_bytes));
   MOCK_METHOD2(StartDebugRecording,
                int(FILE* handle, int64_t max_log_size_bytes));
+  MOCK_METHOD1(StartDebugRecording,
+               int (FILE* handle));
+  MOCK_METHOD1(StartDebugRecording,
+               int(rtc::PlatformFile handle));
   MOCK_METHOD0(StopDebugRecording,
       int());
   MOCK_METHOD0(UpdateHistogramsOnCallEnd, void());
   virtual MockEchoCancellation* echo_cancellation() const {
     return echo_cancellation_.get();
   }
   virtual MockEchoControlMobile* echo_control_mobile() const {
     return echo_control_mobile_.get();
   }
   virtual MockGainControl* gain_control() const {
@@ skipping 18 matching lines @@
   std::unique_ptr<MockGainControl> gain_control_;
   std::unique_ptr<MockHighPassFilter> high_pass_filter_;
   std::unique_ptr<MockLevelEstimator> level_estimator_;
   std::unique_ptr<MockNoiseSuppression> noise_suppression_;
   std::unique_ptr<MockVoiceDetection> voice_detection_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_PROCESSING_INCLUDE_MOCK_AUDIO_PROCESSING_H_