Added an empty AudioTransportProxy to AudioState.

webrtc/audio/audio_state_unittest.cc

 /*
  *  Copyright (c) 2015 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.
  */
 
 #include <memory>
 
 #include "webrtc/audio/audio_state.h"
+#include "webrtc/modules/audio_device/include/mock_audio_device.h"
 #include "webrtc/test/gtest.h"
 #include "webrtc/test/mock_voice_engine.h"
 
 namespace webrtc {
 namespace test {
 namespace {
 
 struct ConfigHelper {
   ConfigHelper() {
     EXPECT_CALL(voice_engine_,
         RegisterVoiceEngineObserver(testing::_)).WillOnce(testing::Return(0));
-    EXPECT_CALL(voice_engine_,
-        DeRegisterVoiceEngineObserver()).WillOnce(testing::Return(0));
+    EXPECT_CALL(voice_engine_, DeRegisterVoiceEngineObserver())
+        .WillOnce(testing::Return(0));
+    EXPECT_CALL(voice_engine_, audio_transport());
+    EXPECT_CALL(voice_engine_, audio_processing());
+    EXPECT_CALL(voice_engine_, audio_device_module());
+    ON_CALL(voice_engine_, audio_device_module())
+        .WillByDefault(Return(&mock_audio_device_));
     config_.voice_engine = &voice_engine_;
   }
   AudioState::Config& config() { return config_; }
   MockVoiceEngine& voice_engine() { return voice_engine_; }
 
  private:
   testing::StrictMock<MockVoiceEngine> voice_engine_;
+  testing::NiceMock<webrtc::test::MockAudioDeviceModule> mock_audio_device_;
   AudioState::Config config_;
 };
 }  // namespace
 
 TEST(AudioStateTest, Create) {
   ConfigHelper helper;
   rtc::scoped_refptr<AudioState> audio_state =
       AudioState::Create(helper.config());
   EXPECT_TRUE(audio_state.get());
 }
@@ skipping 27 matching lines @@
   voe_observer->CallbackOnError(-1, VE_NOT_INITED);
   EXPECT_TRUE(audio_state->typing_noise_detected());
 
   voe_observer->CallbackOnError(-1, VE_TYPING_NOISE_OFF_WARNING);
   EXPECT_FALSE(audio_state->typing_noise_detected());
   voe_observer->CallbackOnError(-1, VE_NOT_INITED);
   EXPECT_FALSE(audio_state->typing_noise_detected());
 }
 }  // namespace test
 }  // namespace webrtc