Generalize content::URLDataSource so that it can be used by the network service.

ios/web/webui/url_data_source_ios.mm

 // 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 "ios/web/public/url_data_source_ios.h"
 
 #import "ios/web/public/web_client.h"
 #include "ios/web/webui/url_data_manager_ios.h"
 #include "net/url_request/url_request.h"
 
@@ skipping 17 matching lines @@
 }
 
 std::string URLDataSourceIOS::GetContentSecurityPolicyObjectSrc() const {
   return "object-src 'none';";
 }
 
 bool URLDataSourceIOS::ShouldDenyXFrameOptions() const {
   return true;
 }
 
-bool URLDataSourceIOS::ShouldServiceRequest(
-    const net::URLRequest* request) const {
-  if (GetWebClient()->IsAppSpecificURL(request->url()))
-    return true;
-  return false;
+bool URLDataSourceIOS::ShouldServiceRequest(const GURL& url) const {
+  return GetWebClient()->IsAppSpecificURL(url);
 }
 
 }  // namespace web