Remove shaped desktop support from remoting host and client.

remoting/webapp/base/js/host_desktop.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.
 
 /**
  * @fileoverview
  * Interface abstracting the functionality of the HostDesktop.
  */
 
 var remoting = remoting || {};
 
 (function() {
 
 'use strict';
 
 /**
  * @interface
  * @extends {base.EventSource}
  */
 remoting.HostDesktop = function() {};
 
 /** @enum {string} */
 remoting.HostDesktop.Events = {
   // Fired when the size of the host desktop changes with the desktop dimensions
   //  {{width:number, height:number, xDpi:number, yDpi:number}}
   sizeChanged: 'sizeChanged',
-  // Fired when the shape of the host desktop changes with an array of
-  // rectangles of desktop shapes as the event data.
-  //   Array<{left:number, top:number, width:number, height:number}>
-  shapeChanged: 'shapeChanged'
 };
 
 /**
  * @return {{width:number, height:number, xDpi:number, yDpi:number}}
  *  The dimensions and DPI settings of the host desktop.
  */
 remoting.HostDesktop.prototype.getDimensions = function() {};
 
 /**
  * Resize the desktop of the host to |width|, |height| and |deviceScale|.
  *
  * @param {number} width The width of the desktop in DIPs.
  * @param {number} height The height of the desktop in DIPs.
  * @param {number} deviceScale
  */
 remoting.HostDesktop.prototype.resize = function(width, height, deviceScale) {};
 
 })();