make ProxyService::CreateSystemProxyConfigService return scoped_ptrs NOT FOR REVIEW

components/cronet/android/cronet_url_request_context_adapter.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/cronet/android/cronet_url_request_context_adapter.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/bind.h"
 #include "base/files/file_util.h"
@@ skipping 129 matching lines @@
   if (pref_service_)
     pref_service_->CommitPendingWrite();
   StopNetLogOnNetworkThread();
 }
 
 void CronetURLRequestContextAdapter::InitRequestContextOnMainThread(
     JNIEnv* env,
     jobject jcaller) {
   base::android::ScopedJavaGlobalRef<jobject> jcaller_ref;
   jcaller_ref.Reset(env, jcaller);
-  proxy_config_service_.reset(net::ProxyService::CreateSystemProxyConfigService(
-      GetNetworkTaskRunner(), nullptr));
+  proxy_config_service_ = net::ProxyService::CreateSystemProxyConfigService(
+      GetNetworkTaskRunner(), nullptr);
   GetNetworkTaskRunner()->PostTask(
       FROM_HERE,
       base::Bind(&CronetURLRequestContextAdapter::InitializeOnNetworkThread,
                  base::Unretained(this), Passed(&context_config_),
                  jcaller_ref));
 }
 
 void CronetURLRequestContextAdapter::InitializeOnNetworkThread(
     scoped_ptr<URLRequestContextConfig> config,
     const base::android::ScopedJavaGlobalRef<jobject>&
@@ skipping 251 matching lines @@
 }
 
 static jint SetMinLogLevel(JNIEnv* env, jclass jcaller, jint jlog_level) {
   jint old_log_level = static_cast<jint>(logging::GetMinLogLevel());
   // MinLogLevel is global, shared by all URLRequestContexts.
   logging::SetMinLogLevel(static_cast<int>(jlog_level));
   return old_log_level;
 }
 
 }  // namespace cronet