[ES6 modules] ModuleTreeLinker::Instantiate shouldn't proceed on invalid context

third_party/WebKit/Source/core/dom/ModulatorImpl.cpp

Index: third_party/WebKit/Source/core/dom/ModulatorImpl.cpp
diff --git a/third_party/WebKit/Source/core/dom/ModulatorImpl.cpp b/third_party/WebKit/Source/core/dom/ModulatorImpl.cpp
index 16081ff5eb37c2bf63ca026d05ba3e5108da2972..f7286dfe173f7aa918a9872fe5c99cddef4ea788 100644
--- a/third_party/WebKit/Source/core/dom/ModulatorImpl.cpp
+++ b/third_party/WebKit/Source/core/dom/ModulatorImpl.cpp
@@ -111,6 +111,10 @@ ModuleScript* ModulatorImpl::GetFetchedModuleScript(const KURL& url) {
   return map_->GetFetchedModuleScript(url);
 }
 
+bool ModulatorImpl::IsContextValid() {

[neis, 2017/05/16 09:10:55]

Could you rename this to ContextIsValid (for consistency), or maybe
HasValidContext?

[kouhei (in TOK), 2017/05/16 17:52:34]

Done.

+  return script_state_->ContextIsValid();
+}
+
 ScriptModule ModulatorImpl::CompileModule(
     const String& provided_source,
     const String& url_str,