Reduce string copies in GURL creation

content/renderer/shared_worker/embedded_shared_worker_stub.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 "content/renderer/shared_worker/embedded_shared_worker_stub.h"
 
 #include <stdint.h>
 #include <utility>
 
 #include "base/thread_task_runner_handle.h"
@@ skipping 211 matching lines @@
 EmbeddedSharedWorkerStub::createApplicationCacheHost(
     blink::WebApplicationCacheHostClient* client) {
   app_cache_host_ = new SharedWorkerWebApplicationCacheHostImpl(client);
   return app_cache_host_;
 }
 
 blink::WebWorkerContentSettingsClientProxy*
     EmbeddedSharedWorkerStub::createWorkerContentSettingsClientProxy(
     const blink::WebSecurityOrigin& origin) {
   return new EmbeddedSharedWorkerContentSettingsClientProxy(
-      GURL(origin.toString()),
+      GURL(base::string16(origin.toString())),
       origin.isUnique(),
       route_id_,
       ChildThreadImpl::current()->thread_safe_sender());
 }
 
 blink::WebServiceWorkerNetworkProvider*
 EmbeddedSharedWorkerStub::createServiceWorkerNetworkProvider(
     blink::WebDataSource* data_source) {
   // Create a content::ServiceWorkerNetworkProvider for this data source so
   // we can observe its requests.
@@ skipping 56 matching lines @@
   }
 }
 
 void EmbeddedSharedWorkerStub::OnTerminateWorkerContext() {
   // After this we wouldn't get any IPC for this stub.
   running_ = false;
   impl_->terminateWorkerContext();
 }
 
 }  // namespace content