Reduce string copies in GURL creation

mojo/shell/connect_to_application_params.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/connect_to_application_params.h"
 
 #include <utility>
 
 #include "mojo/shell/application_instance.h"
 
@@ skipping 19 matching lines @@
   target_url_request_->url = target_.url().spec();
 }
 
 void ConnectToApplicationParams::SetTargetURL(const GURL& target_url) {
   target_ = Identity(target_url, target_.qualifier(), target_.filter());
   target_url_request_ = URLRequest::New();
   target_url_request_->url = target_.url().spec();
 }
 
 void ConnectToApplicationParams::SetTargetURLRequest(URLRequestPtr request) {
-  Identity target = request ? Identity(GURL(request->url), target_.qualifier(),
-                                       target_.filter())
+  Identity target = request ? Identity(GURL(request->url.get()),
+                                       target_.qualifier(), target_.filter())
                             : Identity();
   SetTargetURLRequest(std::move(request), target);
 }
 
 void ConnectToApplicationParams::SetTargetURLRequest(URLRequestPtr request,
                                                      const Identity& target) {
   target_url_request_ = std::move(request);
   target_ = target;
 }
 
 }  // namespace shell
 }  // namespace mojo