Reduce string copies in GURL creation

content/test/weburl_loader_mock.cc

 // Copyright 2013 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/test/weburl_loader_mock.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/child/web_url_loader_impl.h"
 #include "content/test/weburl_loader_mock_factory.h"
+#include "third_party/WebKit/public/platform/URLConversion.h"
 #include "third_party/WebKit/public/platform/WebData.h"
 #include "third_party/WebKit/public/platform/WebURLError.h"
 #include "third_party/WebKit/public/platform/WebURLLoaderClient.h"
 #include "third_party/WebKit/public/platform/WebUnitTestSupport.h"
 
 WebURLLoaderMock::WebURLLoaderMock(WebURLLoaderMockFactory* factory,
                                    blink::WebURLLoader* default_loader)
     : factory_(factory),
       client_(NULL),
       default_loader_(default_loader),
@@ skipping 38 matching lines @@
                              data.size());
   if (!self)
     return;
 
   delegate->didFinishLoading(client_, this, 0, data.size());
 }
 
 blink::WebURLRequest WebURLLoaderMock::ServeRedirect(
     const blink::WebURLRequest& request,
     const blink::WebURLResponse& redirectResponse) {
-  GURL redirectURL(redirectResponse.httpHeaderField("Location"));
+  GURL redirectURL(
+      blink::WebStringToGURL(redirectResponse.httpHeaderField("Location")));
 
   net::RedirectInfo redirectInfo;
   redirectInfo.new_method = request.httpMethod().utf8();
   redirectInfo.new_url = redirectURL;
   redirectInfo.new_first_party_for_cookies = redirectURL;
 
   blink::WebURLRequest newRequest;
   newRequest.initialize();
   content::WebURLLoaderImpl::PopulateURLRequestForRedirect(
       request,
@@ skipping 65 matching lines @@
     default_loader_->setDefersLoading(deferred);
     return;
   }
   NOTIMPLEMENTED();
 }
 
 void WebURLLoaderMock::setLoadingTaskRunner(blink::WebTaskRunner*) {
   // In principle this is NOTIMPLEMENTED(), but if we put that here it floods
   // the console during webkit unit tests, so we leave the function empty.
 }