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

ios/web/webui/url_data_source_ios.mm

Index: ios/web/webui/url_data_source_ios.mm
diff --git a/ios/web/webui/url_data_source_ios.mm b/ios/web/webui/url_data_source_ios.mm
index 537b1436e5f00eb7e6a8a0fd838b5c535186a0a3..def77e58f0055ab3ee4ed40c80e152970490be7b 100644
--- a/ios/web/webui/url_data_source_ios.mm
+++ b/ios/web/webui/url_data_source_ios.mm
@@ -35,11 +35,8 @@ 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