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 fcb5893e2ce1e11b43cf90f795a1ea7ba9f2eb55..da6df33643f058c5268c5bbe093d5e6c8a1b130a 100644
--- a/content/browser/renderer_host/resource_dispatcher_host_impl.cc
+++ b/content/browser/renderer_host/resource_dispatcher_host_impl.cc
@@ -889,6 +889,8 @@ 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(
@@ -906,7 +908,7 @@ 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);