[DevTools] Rework Popover API

third_party/WebKit/Source/devtools/front_end/dom_extension/DOMExtension.js

 /*
  * Copyright (C) 2007 Apple Inc.  All rights reserved.
  * Copyright (C) 2012 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 454 matching lines @@
    * @param {number=} y
    * @param {number=} width
    * @param {number=} height
    */
   constructor(x, y, width, height) {
     this.x = x || 0;
     this.y = y || 0;
     this.width = width || 0;
     this.height = height || 0;
   }
+
+  /**
+   * @param {number} x
+   * @param {number} y
+   * @return {boolean}
+   */
+  contains(x, y) {
+    return x >= this.x && x <= this.x + this.width && y >= this.y && y <= this.y + this.height;
+  }
 };
 
 /**
  * @param {!AnchorBox} box
  * @return {!AnchorBox}
  */
 AnchorBox.prototype.relativeTo = function(box) {
   return new AnchorBox(this.x - box.x, this.y - box.y, this.width, this.height);
 };
 
@@ skipping 326 matching lines @@
   return event.keyCode !== 229 && event.key === 'Enter';
 }
 
 /**
  * @param {!Event} event
  * @return {boolean}
  */
 function isEscKey(event) {
   return event.keyCode === 27;
 }