DevTools: throttle calls to ToolbarMenuButton.trigger() to avoid bad context menu state on Mac

third_party/WebKit/Source/devtools/front_end/ui/Toolbar.js

 /*
  * Copyright (C) 2009 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.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 697 matching lines @@
         if (!this._triggerTimeout)
             this._triggerTimeout = setTimeout(this._trigger.bind(this, event), 200);
     },
 
     /**
      * @param {!Event} event
      */
     _trigger: function(event)
     {
         delete this._triggerTimeout;
+
+        // Throttling avoids entering a bad state on Macs when rapidly triggering context menus just
+        // after the window gains focus. See crbug.com/655556
+        if (this._lastTriggerTime && Date.now() - this._lastTriggerTime < 300)
+          return;
         var contextMenu = new WebInspector.ContextMenu(event,
             this._useSoftMenu,
             this.element.totalOffsetLeft(),
             this.element.totalOffsetTop() + this.element.offsetHeight);
         this._contextMenuHandler(contextMenu);
         contextMenu.show();
+        this._lastTriggerTime = Date.now();
     },
 
     /**
      * @override
      * @param {!Event} event
      */
     _clicked: function(event)
     {
         if (!this._triggerTimeout)
             return;
@@ skipping 253 matching lines @@
      * @param {boolean} value
      */
     setChecked: function(value)
     {
         this.inputElement.checked = value;
     },
 
     __proto__: WebInspector.ToolbarItem.prototype
 }