Avoid firing load events on style elements if there is no listeners for that

third_party/WebKit/Source/core/dom/Document.h

Index: third_party/WebKit/Source/core/dom/Document.h
diff --git a/third_party/WebKit/Source/core/dom/Document.h b/third_party/WebKit/Source/core/dom/Document.h
index 9b0ab6e6ced219e4f512f65ba15156b7e9a98393..9152670f099f196a59bff8e775643de6d1f732d7 100644
--- a/third_party/WebKit/Source/core/dom/Document.h
+++ b/third_party/WebKit/Source/core/dom/Document.h
@@ -791,14 +791,15 @@ class CORE_EXPORT Document : public ContainerNode,
     ANIMATIONSTART_LISTENER = 1 << 7,
     ANIMATIONITERATION_LISTENER = 1 << 8,
     TRANSITIONEND_LISTENER = 1 << 9,
-    SCROLL_LISTENER = 1 << 10
-    // 5 bits remaining
+    SCROLL_LISTENER = 1 << 10,
+    LOAD_LISTENER_AT_CAPTURE_PHASE_OR_AT_STYLE_ELEMENT = 1 << 11
+    // 4 bits remaining

[tkent, 2017/04/25 01:36:32]

Oh, this enum wasn't renamed to kCamelCase.

[hayato, 2017/04/25 01:40:13]

Ah, I didn't notice it. :) I can rename these in another CL.

   };
 
   bool HasListenerType(ListenerType listener_type) const {
     return (listener_types_ & listener_type);
   }
-  void AddListenerTypeIfNeeded(const AtomicString& event_type);
+  void AddListenerTypeIfNeeded(const AtomicString& event_type, EventTarget&);
 
   bool HasMutationObserversOfType(MutationObserver::MutationType type) const {
     return mutation_observer_types_ & type;