Prepending view-source: does not load the source of the userscript.

content/browser/renderer_host/resource_dispatcher_host_impl.cc

Index: content/browser/renderer_host/resource_dispatcher_host_impl.cc
diff --git a/content/browser/renderer_host/resource_dispatcher_host_impl.cc b/content/browser/renderer_host/resource_dispatcher_host_impl.cc
index d7ea8ad9b7a536e511d4b4a27483804487b78132..28a01b509ca297912d922293359c2dc990cde55a 100644
--- a/content/browser/renderer_host/resource_dispatcher_host_impl.cc
+++ b/content/browser/renderer_host/resource_dispatcher_host_impl.cc
@@ -887,6 +887,8 @@ void ResourceDispatcherHostImpl::BeginRequest(
     }
   }
 
+  bool allow_download = request_data.allow_download &&
+      ResourceType::IsFrame(request_data.resource_type);
   // Make extra info and read footer (contains request ID).
   ResourceRequestInfoImpl* extra_info =
       new ResourceRequestInfoImpl(
@@ -904,7 +906,7 @@ void ResourceDispatcherHostImpl::BeginRequest(
           request_data.transition_type,
           upload_size,
           false,  // is download
-          ResourceType::IsFrame(request_data.resource_type),  // allow_download
+          allow_download,
           request_data.has_user_gesture,
           request_data.referrer_policy,
           resource_context);