Replace scoped_ptr with unique_ptr in webrtc/audio/

webrtc/audio/audio_state_unittest.cc

Index: webrtc/audio/audio_state_unittest.cc
diff --git a/webrtc/audio/audio_state_unittest.cc b/webrtc/audio/audio_state_unittest.cc
index 11fbdb4a86dd6173d5b7e0d7a21ac0650c0da70f..b0e2bc4c03221ec2fa6a3ba29de5f6bae274f021 100644
--- a/webrtc/audio/audio_state_unittest.cc
+++ b/webrtc/audio/audio_state_unittest.cc
@@ -8,10 +8,11 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
+#include <memory>
+
 #include "testing/gtest/include/gtest/gtest.h"
 
 #include "webrtc/audio/audio_state.h"
-#include "webrtc/base/scoped_ptr.h"
 #include "webrtc/test/mock_voice_engine.h"
 
 namespace webrtc {
@@ -44,20 +45,20 @@ TEST(AudioStateTest, Create) {
 
 TEST(AudioStateTest, ConstructDestruct) {
   ConfigHelper helper;
-  rtc::scoped_ptr<internal::AudioState> audio_state(
+  std::unique_ptr<internal::AudioState> audio_state(
       new internal::AudioState(helper.config()));
 }
 
 TEST(AudioStateTest, GetVoiceEngine) {
   ConfigHelper helper;
-  rtc::scoped_ptr<internal::AudioState> audio_state(
+  std::unique_ptr<internal::AudioState> audio_state(
       new internal::AudioState(helper.config()));
   EXPECT_EQ(audio_state->voice_engine(), &helper.voice_engine());
 }
 
 TEST(AudioStateTest, TypingNoiseDetected) {
   ConfigHelper helper;
-  rtc::scoped_ptr<internal::AudioState> audio_state(
+  std::unique_ptr<internal::AudioState> audio_state(
       new internal::AudioState(helper.config()));
   VoiceEngineObserver* voe_observer =
       static_cast<VoiceEngineObserver*>(audio_state.get());