Disabling right-click menu in Chrome OS Photo Editor and Media Player

chrome/browser/resources/file_manager/js/audio_player.js

 // Copyright (c) 2012 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.
 
 document.addEventListener('DOMContentLoaded', function() {
   // Test harness sets the search string to prevent the automatic load.
   // It calls AudioPlayer.load() explicitly after initializing
   // the |chrome| variable with an appropriate mock object.
   if (!document.location.search) {
     AudioPlayer.load();
@@ skipping 33 matching lines @@
       'click', this.onExpandCollapse_.bind(this));
 
   this.audioControls_ = new AudioControls(
       createChild(), this.advance_.bind(this));
 
   this.audioControls_.attachMedia(createChild('', 'audio'));
 }
 
 AudioPlayer.load = function() {
   document.ondragstart = function(e) { e.preventDefault() };
+  document.oncontextmenu = function(e) { e.preventDefault(); };
 
   var player = new AudioPlayer(document.querySelector('.audio-player'));
   function getPlaylist() {
     chrome.mediaPlayerPrivate.getPlaylist(player.load.bind(player));
   }
   getPlaylist();
   chrome.mediaPlayerPrivate.onPlaylistChanged.addListener(getPlaylist);
 };
 
 AudioPlayer.prototype.load = function(playlist) {
@@ skipping 199 matching lines @@
 };
 
 AudioPlayer.TrackInfo.prototype.setMetadata = function(metadata) {
   if (metadata.thumbnailURL) {
     this.art_.classList.remove('blank');
     this.img_.src = metadata.thumbnailURL;
   }
   this.title_.textContent = metadata.title || this.getDefaultTitle();
   this.artist_.textContent = metadata.artist || this.getDefaultArtist();
 };