Add chrome.fileSystem.GetVolumeList().

chrome/renderer/resources/extensions/file_system_custom_bindings.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.
 
 // Custom binding for the fileSystem API.
 
 var binding = require('binding').Binding.create('fileSystem');
 var sendRequest = require('sendRequest');
 
 var getFileBindingsForApi =
@@ skipping 76 matching lines @@
       fileSystem = fileSystemNatives.GetIsolatedFileSystem(
           response.file_system_id, response.file_system_path);
     }
     sendRequest.safeCallbackApply(
         'fileSystem.requestFileSystem',
         request,
         callback,
         [fileSystem]);
   });
 
+  apiFunctions.setCustomCallback('getVolumeList',
+      function(name, request, callback, response) {
+    var volumeList = response || null;
+    sendRequest.safeCallbackApply(
+        'fileSystem.getVolumeList',
+        request,
+        callback,
+        [volumeList]);
+  });
+
   // TODO(benwells): Remove these deprecated versions of the functions.
   fileSystem.getWritableFileEntry = function() {
     console.log("chrome.fileSystem.getWritableFileEntry is deprecated");
     console.log("Please use chrome.fileSystem.getWritableEntry instead");
     $Function.apply(fileSystem.getWritableEntry, this, arguments);
   };
 
   fileSystem.isWritableFileEntry = function() {
     console.log("chrome.fileSystem.isWritableFileEntry is deprecated");
     console.log("Please use chrome.fileSystem.isWritableEntry instead");
     $Function.apply(fileSystem.isWritableEntry, this, arguments);
   };
 
   fileSystem.chooseFile = function() {
     console.log("chrome.fileSystem.chooseFile is deprecated");
     console.log("Please use chrome.fileSystem.chooseEntry instead");
     $Function.apply(fileSystem.chooseEntry, this, arguments);
   };
 });
 
 exports.bindFileEntryCallback = bindFileEntryCallback;
 exports.binding = binding.generate();