[DevTools] Add 200ms timeout to menu on mousedown behavior.

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

Index: third_party/WebKit/Source/devtools/front_end/ui/Toolbar.js
diff --git a/third_party/WebKit/Source/devtools/front_end/ui/Toolbar.js b/third_party/WebKit/Source/devtools/front_end/ui/Toolbar.js
index cfc5efd13db88e8f10692ce1cf6437ecc63b37f7..3859dd57257a4d66da51422d756b31656ad25c24 100644
--- a/third_party/WebKit/Source/devtools/front_end/ui/Toolbar.js
+++ b/third_party/WebKit/Source/devtools/front_end/ui/Toolbar.js
@@ -644,6 +644,16 @@ WebInspector.ToolbarMenuButton.prototype = {
             return;
         }
 
+        if (!this._triggerTimeout)
+            this._triggerTimeout = setTimeout(this._trigger.bind(this, event), 200);
+    },
+
+    /**
+     * @param {!Event} event
+     */
+    _trigger: function(event)
+    {
+        delete this._triggerTimeout;
         var contextMenu = new WebInspector.ContextMenu(event,
             this._useSoftMenu,
             this.element.totalOffsetLeft(),
@@ -658,6 +668,11 @@ WebInspector.ToolbarMenuButton.prototype = {
      */
     _clicked: function(event)
     {
+        if (this._triggerTimeout) {

[caseq, 2016/03/16 00:12:00]

nit:
if (!this._triggerTimeout)
    return;

[dgozman, 2016/03/16 01:54:13]

Done.

+            clearTimeout(this._triggerTimeout);
+            delete this._triggerTimeout;

[caseq, 2016/03/16 00:12:00]

this is redundant.

[dgozman, 2016/03/16 01:54:12]

Done.

+            this._trigger(event);
+        }
     },
 
     __proto__: WebInspector.ToolbarButton.prototype