Reduce string copies in GURL creation

mojo/shell/application_instance.cc

 // Copyright 2015 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 "mojo/shell/application_instance.h"
 
 #include <stdint.h>
 
 #include <utility>
 
@@ skipping 83 matching lines @@
   }
   if (allow_any_application_ ||
       identity_.filter().find(url.spec()) != identity_.filter().end()) {
     CapabilityFilter capability_filter = GetPermissiveCapabilityFilter();
     if (!filter.is_null())
       capability_filter = filter->filter.To<CapabilityFilter>();
 
     scoped_ptr<ConnectToApplicationParams> params(
         new ConnectToApplicationParams);
     params->SetSource(this);
-    GURL app_url(app_request->url);
+    GURL app_url(app_request->url.get());
     params->SetTargetURLRequest(
         std::move(app_request),
         Identity(app_url, std::string(), capability_filter));
     params->set_services(std::move(services));
     params->set_exposed_services(std::move(exposed_services));
     params->set_connect_callback(callback);
     manager_->ConnectToApplication(std::move(params));
   } else {
     LOG(WARNING) << "CapabilityFilter prevented connection from: " <<
         identity_.url() << " to: " << url.spec();
@@ skipping 78 matching lines @@
 
   queue_requests_ = false;
   for (auto request : queued_client_requests_)
     CallAcceptConnection(make_scoped_ptr(request));
 
   queued_client_requests_.clear();
 }
 
 }  // namespace shell
 }  // namespace mojo