Devtools UI: Remove redundant tooltips

Source/devtools/front_end/elements/ComputedStyleWidget.js

 /*
  * Copyright (C) 2007 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 36 matching lines @@
     this._showInheritedComputedStylePropertiesSetting = WebInspector.settings.createSetting("showInheritedComputedStyleProperties", false);
     this._showInheritedComputedStylePropertiesSetting.addChangeListener(this._showInheritedComputedStyleChanged.bind(this));
 
     var hbox = this.element.createChild("div", "hbox styles-sidebar-pane-toolbar");
     var filterContainerElement = hbox.createChild("div", "styles-sidebar-pane-filter-box");
     var filterInput = WebInspector.StylesSidebarPane.createPropertyFilterElement(WebInspector.UIString("Filter"), hbox, filterCallback.bind(this));
     filterContainerElement.appendChild(filterInput);
 
     var toolbar = new WebInspector.Toolbar(hbox);
     toolbar.element.classList.add("styles-pane-toolbar");
-    toolbar.appendToolbarItem(new WebInspector.ToolbarCheckbox(WebInspector.UIString("Show inherited"),
-                                                               WebInspector.UIString("Show inherited properties"),
-                                                               this._showInheritedComputedStylePropertiesSetting));
+    toolbar.appendToolbarItem(new WebInspector.ToolbarCheckbox(WebInspector.UIString("Show inherited"), undefined, this._showInheritedComputedStylePropertiesSetting));
 
     this._propertiesContainer = this.element.createChild("div", "monospace");
     this._propertiesContainer.classList.add("computed-properties");
     this._onTracePropertyBound = this._onTraceProperty.bind(this);
 
     this._stylesSidebarPane = stylesSidebarPane;
 
     /**
      * @param {?RegExp} regex
      * @this {WebInspector.ComputedStyleWidget}
@@ skipping 136 matching lines @@
         for (var i = 0; i < this._propertiesContainer.children.length; ++i) {
             var item = this._propertiesContainer.children[i];
             var property = item[WebInspector.ComputedStyleWidget._propertySymbol];
             var matched = !regex || regex.test(property.name) || regex.test(property.value);
             item.classList.toggle("hidden", !matched);
         }
     },
 
     __proto__: WebInspector.ThrottledWidget.prototype
 }