make ProxyService::CreateSystemProxyConfigService return scoped_ptrs NOT FOR REVIEW

net/url_request/url_request_context_builder.cc

Index: net/url_request/url_request_context_builder.cc
diff --git a/net/url_request/url_request_context_builder.cc b/net/url_request/url_request_context_builder.cc
index a488d2f6ae297c2e06fa79f992bf8a32c84b4532..9c7d9a09c04696ba3b217bb2a9b7c358526e2fb3 100644
--- a/net/url_request/url_request_context_builder.cc
+++ b/net/url_request/url_request_context_builder.cc
@@ -277,11 +277,12 @@ scoped_ptr<URLRequestContext> URLRequestContextBuilder::Build() {
     // TODO(willchan): Switch to using this code when
     // ProxyService::CreateSystemProxyConfigService()'s signature doesn't suck.
   #if defined(OS_LINUX) || defined(OS_ANDROID)
-    ProxyConfigService* proxy_config_service = proxy_config_service_.release();
+    scoped_ptr<ProxyConfigService> proxy_config_service(
+        proxy_config_service_.release());
   #else
-    ProxyConfigService* proxy_config_service = NULL;
+    scoped_ptr<ProxyConfigService> proxy_config_service;
     if (proxy_config_service_) {
-      proxy_config_service = proxy_config_service_.release();
+      proxy_config_service.reset(proxy_config_service_.release());
     } else {
       proxy_config_service = ProxyService::CreateSystemProxyConfigService(
           base::ThreadTaskRunnerHandle::Get().get(),
@@ -289,7 +290,7 @@ scoped_ptr<URLRequestContext> URLRequestContextBuilder::Build() {
     }
   #endif  // defined(OS_LINUX) || defined(OS_ANDROID)
     proxy_service_ = ProxyService::CreateUsingSystemProxyResolver(
-        proxy_config_service,
+        proxy_config_service.Pass(),
         0,  // This results in using the default value.
         context->net_log());
   }