[FileManager] Do drive search incrementally

chrome/test/data/extensions/api_test/filebrowser_component/remote_search.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.
 
 function errorCallback(messagePrefix, error) {
   var msg = '';
   if (!error.code) {
     msg = error.message;
   } else {
     switch (error.code) {
@@ skipping 59 matching lines @@
 chrome.test.runTests([
   function loadFileSystem() {
   chrome.fileBrowserPrivate.requestLocalFileSystem(
       function (fs) {
         chrome.test.assertTrue(!!fs);
         fs.root.getDirectory('drive', {create: false}, chrome.test.succeed,
             errorCallback.bind(null, 'Unable to get drive root '));
       });
   },
   function driveSearch() {
-    chrome.fileBrowserPrivate.searchGData('foo',
-        function(entries) {
+    chrome.fileBrowserPrivate.searchGData('foo', '',
+        function(entries, nextFeed) {
           chrome.test.assertTrue(!!entries);
           chrome.test.assertEq(2, entries.length);
+          chrome.test.assertEq('', nextFeed);
 
           chrome.test.assertEq('/drive/Folder',
                                entries[0].fullPath);
           chrome.test.assertEq('/drive/Folder/File.aBc',
                                entries[1].fullPath);
 
          var directoryVerifier = verifyDirectoryAccessible.bind(null,
              entries[0], 1, chrome.test.succeed, errorCallback);
 
          verifyFileAccessible(entries[1], directoryVerifier, errorCallback);
         });
   }
 ]);