Send mouse events for disabled form controls.

third_party/WebKit/Source/core/events/EventPath.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 61 matching lines @@
     return *window_event_context_;
   }
   void EnsureWindowEventContext();
 
   bool IsEmpty() const { return node_event_contexts_.IsEmpty(); }
   size_t size() const { return node_event_contexts_.size(); }
 
   void AdjustForRelatedTarget(Node&, EventTarget* related_target);
   void AdjustForTouchEvent(TouchEvent&);
 
+  bool DisabledFormControlExistsInPath() const;
+
   NodeEventContext& TopNodeEventContext();
 
   static EventTarget* EventTargetRespectingTargetRules(Node&);
 
   DECLARE_TRACE();
   void Clear() {
     node_event_contexts_.clear();
     tree_scope_event_contexts_.clear();
   }
 
@@ skipping 40 matching lines @@
   HeapVector<NodeEventContext> node_event_contexts_;
   Member<Node> node_;
   Member<Event> event_;
   HeapVector<Member<TreeScopeEventContext>> tree_scope_event_contexts_;
   Member<WindowEventContext> window_event_context_;
 };
 
 }  // namespace blink
 
 #endif