DevTools: only set title w/ shortcut via Tooltip manager API.

Source/devtools/front_end/accessibility/AccessibilitySidebarView.js

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @constructor
  * @extends {WebInspector.ThrottledWidget}
  */
 WebInspector.AccessibilitySidebarView = function()
 {
@@ skipping 443 matching lines @@
 /**
  * @param {?string} name
  * @return {!Element}
  */
 WebInspector.AXNodePropertyTreeElement.createNameElement = function(name)
 {
     var nameElement = createElement("span");
     var AXAttributes = WebInspector.AccessibilityStrings.AXAttributes;
     if (name in AXAttributes) {
         nameElement.textContent = WebInspector.UIString(AXAttributes[name].name);
-        WebInspector.Tooltip.install(nameElement, AXAttributes[name].description);
+        nameElement.title = AXAttributes[name].description;
         nameElement.classList.add("ax-readable-name");
     } else {
         nameElement.textContent = name;
         nameElement.classList.add("ax-name");
     }
     return nameElement;
 }
 
 /**
  * @param {!AccessibilityAgent.AXValue} value
@@ skipping 204 matching lines @@
         reasonElement = WebInspector.formatLocalized("Static text node is used as name for ", [], "");
         break;
     case "uninteresting":
         reasonElement = WebInspector.formatLocalized("Element not interesting for accessibility.", [], "")
         break;
     }
     if (reasonElement)
         reasonElement.classList.add("ax-reason");
     return reasonElement;
 }