Functionality to allow blacklist and whitelist of custom schemes

content/public/browser/resource_dispatcher_host_delegate.cc

Index: content/public/browser/resource_dispatcher_host_delegate.cc
diff --git a/content/public/browser/resource_dispatcher_host_delegate.cc b/content/public/browser/resource_dispatcher_host_delegate.cc
index 6b57b792a255638960c43bd6c7ca0a62628330f9..0f6c96d90405b82aa004c74fda2c6a8007288b83 100644
--- a/content/public/browser/resource_dispatcher_host_delegate.cc
+++ b/content/public/browser/resource_dispatcher_host_delegate.cc
@@ -50,7 +50,8 @@ bool ResourceDispatcherHostDelegate::HandleExternalProtocol(
     const ResourceRequestInfo::WebContentsGetter& web_contents_getter,
     bool is_main_frame,
     ui::PageTransition page_transition,
-    bool has_user_gesture) {
+    bool has_user_gesture,
+    ResourceContext* resource_context) {
   return true;
 }