[DevTools] Simplify Popover API

third_party/WebKit/Source/devtools/front_end/inline_editor/SwatchPopoverHelper.js

 // Copyright 2016 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.
 /**
  * @unrestricted
  */
 InlineEditor.SwatchPopoverHelper = class extends Common.Object {
   constructor() {
     super();
-    this._popover = new UI.Popover();
-    this._popover.setNoPadding(true);
+    this._popover = new UI.GlassPane();
+    this._popover.registerRequiredCSS('inline_editor/swatchPopover.css');
+    this._popover.setBlockPointerEvents(false);
+    this._popover.setSizeBehavior(UI.GlassPane.SizeBehavior.MeasureContent);
+    this._popover.setShowArrow(true);
     this._popover.element.addEventListener('mousedown', e => e.consume(), false);
 
     this._hideProxy = this.hide.bind(this, true);
     this._boundOnKeyDown = this._onKeyDown.bind(this);
     this._boundFocusOut = this._onFocusOut.bind(this);
     this._isHidden = true;
   }
 
   /**
    * @param {!Event} event
@@ skipping 32 matching lines @@
     this.reposition();
     view.focus();
 
     var document = this._popover.element.ownerDocument;
     document.addEventListener('mousedown', this._hideProxy, false);
     document.defaultView.addEventListener('resize', this._hideProxy, false);
     this._view.contentElement.addEventListener('keydown', this._boundOnKeyDown, false);
   }
 
   reposition() {
-    // Unbind "blur" listener to avoid reenterability: |popover.showView| will hide the popover and trigger it synchronously.
+    // Unbind "blur" listener to avoid reenterability: |popover.show()| will hide the popover and trigger it synchronously.
     this._view.contentElement.removeEventListener('focusout', this._boundFocusOut, false);
-    this._popover.showView(this._view, this._anchorElement);
+    this._view.show(this._popover.contentElement);
+    this._popover.setContentAnchorBox(this._anchorElement.boxInWindow());
+    this._popover.show(this._anchorElement.ownerDocument);
     this._view.contentElement.addEventListener('focusout', this._boundFocusOut, false);
     if (!this._focusRestorer)
       this._focusRestorer = new UI.WidgetFocusRestorer(this._view);
   }
 
   /**
    * @param {boolean=} commitEdit
    */
   hide(commitEdit) {
     if (this._isHidden)
@@ skipping 26 matching lines @@
       this.hide(true);
       event.consume(true);
       return;
     }
     if (event.key === 'Escape') {
       this.hide(false);
       event.consume(true);
     }
   }
 };