[DevTools] Make UI.GlassPane position contentElement for different overlay controls.

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 105 matching lines @@
       function clicked(event) {
         button._clicked(/** @type {!Event} */ (event.data));
       }
 
       mainButtonClone.setToggled(action.toggled());
       buttons.push(mainButtonClone);
 
       var document = button.element.ownerDocument;
       document.documentElement.addEventListener('mouseup', mouseUp, false);
 
-      var optionsGlassPane = new UI.GlassPane(document);
-      var optionsBar = new UI.Toolbar('fill', optionsGlassPane.element);
+      var optionsGlassPane = new UI.GlassPane(document, false /* dimmed */, true /* blockPointerEvents */, event => {});
+      optionsGlassPane.show();
+      var optionsBar = new UI.Toolbar('fill', optionsGlassPane.contentElement);
       optionsBar._contentElement.classList.add('floating');
       const buttonHeight = 26;
 
       var hostButtonPosition = button.element.totalOffset();
 
       var topNotBottom = hostButtonPosition.top + buttonHeight * buttons.length < document.documentElement.offsetHeight;
 
       if (topNotBottom)
         buttons = buttons.reverse();
 
@@ skipping 22 matching lines @@
       function mouseOut(e) {
         if (e.which !== 1)
           return;
         var buttonElement = e.target.enclosingNodeOrSelfWithClass('toolbar-item');
         buttonElement.classList.remove('emulate-active');
       }
 
       function mouseUp(e) {
         if (e.which !== 1)
           return;
-        optionsGlassPane.dispose();
+        optionsGlassPane.hide();
         document.documentElement.removeEventListener('mouseup', mouseUp, false);
 
         for (var i = 0; i < buttons.length; ++i) {
           if (buttons[i].element.classList.contains('emulate-active')) {
             buttons[i].element.classList.remove('emulate-active');
             buttons[i]._clicked(e);
             break;
           }
         }
       }
@@ skipping 814 matching lines @@
 
   /**
    * @override
    * @param {boolean} enabled
    */
   _applyEnabledState(enabled) {
     super._applyEnabledState(enabled);
     this.inputElement.disabled = !enabled;
   }
 };