Replace scoped_ptr with unique_ptr in webrtc/modules/audio_device/

webrtc/modules/audio_device/android/build_info.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 "webrtc/modules/audio_device/android/build_info.h"
 
 #include "webrtc/modules/utility/include/helpers_android.h"
 
 namespace webrtc {
 
 BuildInfo::BuildInfo()
-    : j_environment_(JVM::GetInstance()->environment()),
+    : j_environment_(rtc::ScopedToUnique(JVM::GetInstance()->environment())),
       j_build_info_(JVM::GetInstance()->GetClass(
           "org/webrtc/voiceengine/BuildInfo")) {
 }
 
 std::string BuildInfo::GetStringFromJava(const char* name) {
   jmethodID id = j_build_info_.GetStaticMethodId(name, "()Ljava/lang/String;");
   jstring j_string = static_cast<jstring>(
       j_build_info_.CallStaticObjectMethod(id));
   return j_environment_->JavaToStdString(j_string);
 }
@@ skipping 20 matching lines @@
 
 std::string BuildInfo::GetBuildRelease() {
   return GetStringFromJava("getBuildRelease");
 }
 
 std::string BuildInfo::GetSdkVersion() {
   return GetStringFromJava("getSdkVersion");
 }
 
 }  // namespace webrtc