Implement chrome.fileSystem.requestFileSystem().

third_party/closure_compiler/externs/chrome_extensions.js

Index: third_party/closure_compiler/externs/chrome_extensions.js
diff --git a/third_party/closure_compiler/externs/chrome_extensions.js b/third_party/closure_compiler/externs/chrome_extensions.js
index a4f9c4831f8184b5d5ac98e0e06e5f81e4d0b7ad..0dc3411fd0c45b98e4af98e7435e1cc6914980a8 100644
--- a/third_party/closure_compiler/externs/chrome_extensions.js
+++ b/third_party/closure_compiler/externs/chrome_extensions.js
@@ -6827,6 +6827,16 @@ chrome.fileSystem.ChooseEntryOptions;
 
 
 /**
+ * @typedef {?{
+ *   volumeId: string,
+ *   writable: (boolean|undefined)
+ * }}
+ * @see http://developer.chrome.com/apps/fileSystem.html#method-requestFileSystem
+ */
+chrome.fileSystem.RequestFileSystemOptions;
+
+
+/**
  * @param {!chrome.fileSystem.ChooseEntryOptions|
  *     function(Entry=, !Array.<!FileEntry>=)} optionsOrCallback The
  *     options for the file prompt or the callback.
@@ -6863,6 +6873,15 @@ chrome.fileSystem.retainEntry = function(entry) {};
 
 
 /**
+ * @param {!chrome.fileSystem.RequestFileSystemOptions} options Options for the
+ *     request.
+ * @param {!function(FileSystem)} callback A completion callback.
+ * @see http://developer.chrome.com/apps/fileSystem.html#method-requestFileSystem
+ */
+chrome.fileSystem.requestFileSystem = function(options, callback) {};
+
+
+/**
  * @const
  * @see https://developer.chrome.com/apps/syncFileSystem
  */