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

components/dom_distiller/content/browser/dom_distiller_viewer_source.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 "components/dom_distiller/content/browser/dom_distiller_viewer_source.h"
 
 #include <memory>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 272 matching lines @@
     const std::string& path) const {
   if (kViewerCssPath == path) {
     return "text/css";
   } else if (kViewerLoadingImagePath == path) {
     return "image/svg+xml";
   }
   return "text/html";
 }
 
 bool DomDistillerViewerSource::ShouldServiceRequest(
-    const net::URLRequest* request) const {
-  return request->url().SchemeIs(scheme_);
-}
-
-// TODO(nyquist): Start tracking requests using this method.
-void DomDistillerViewerSource::WillServiceRequest(
-    const net::URLRequest* request,
-    std::string* path) const {
+    const GURL& url,
+    content::ResourceContext* resource_context,
+    int render_process_id) const {
+  return url.SchemeIs(scheme_);
 }
 
 std::string DomDistillerViewerSource::GetContentSecurityPolicyStyleSrc()
     const {
   return "style-src 'self' https://fonts.googleapis.com;";
 }
 
 std::string DomDistillerViewerSource::GetContentSecurityPolicyChildSrc() const {
   return "child-src *;";
 }
 
 }  // namespace dom_distiller