Reduce string copies in GURL creation

media/blink/webencryptedmediaclient_impl.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 "media/blink/webencryptedmediaclient_impl.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/metrics/histogram.h"
@@ skipping 82 matching lines @@
 }
 
 WebEncryptedMediaClientImpl::~WebEncryptedMediaClientImpl() {
 }
 
 void WebEncryptedMediaClientImpl::requestMediaKeySystemAccess(
     blink::WebEncryptedMediaRequest request) {
   GetReporter(request.keySystem())->ReportRequested();
 
   if (GetMediaClient()) {
-    GURL security_origin(request.securityOrigin().toString());
+    GURL security_origin(base::string16(request.securityOrigin().toString()));
 
     GetMediaClient()->RecordRapporURL("Media.OriginUrl.EME", security_origin);
 
     blink::WebString error_message;
     if (!request.securityOrigin().isPotentiallyTrustworthy(error_message)) {
       GetMediaClient()->RecordRapporURL("Media.OriginUrl.EME.Insecure",
                                         security_origin);
     }
   }
 
@@ skipping 45 matching lines @@
   std::string uma_name = GetKeySystemNameForUMA(key_system_ascii);
   Reporter* reporter = reporters_.get(uma_name);
   if (!reporter) {
     reporter = new Reporter(uma_name);
     reporters_.add(uma_name, make_scoped_ptr(reporter));
   }
   return reporter;
 }
 
 }  // namespace media