Gallery: Filter out video files in the gallery.

ui/file_manager/gallery/js/background.js

 // Copyright 2014 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.
 
 'use strict';
 
 /**
  * @param {Object.<string, string>} stringData String data.
  * @param {VolumeManager} volumeManager Volume manager.
  */
@@ skipping 142 matching lines @@
     return args[0];
   });
 
 
   // If only 1 entry is selected, retrieve entries in the same directory.
   // Otherwise, just use the selectedEntries as an entry set.
   var allEntriesPromise = selectedEntriesPromise.then(function(entries) {
     if (entries.length === 1) {
       var parentPromise = new Promise(entries[0].getParent.bind(entries[0]));
       return parentPromise.then(getChildren).then(function(entries) {
-        return entries.filter(FileType.isImageOrVideo);
+        return entries.filter(FileType.isImage);
       });
     } else {
       return entries;
     }
   });
 
   // Open entries.
   return Promise.all([
     appWindowPromise,
     allEntriesPromise,
@@ skipping 30 matching lines @@
   chrome.runtime.onMessageExternal.addListener(function(message) {
     if (message.name !== 'testResourceLoaded')
       return;
     var script = document.createElement('script');
     script.src =
         'chrome-extension://ejhcmmdhhpdhhgmifplfmjobgegbibkn' +
         '/gallery/test_loader.js';
     document.documentElement.appendChild(script);
   });
 }