Implement chrome.fileSystem.requestFileSystem().

third_party/closure_compiler/externs/file_manager_private.js

Index: third_party/closure_compiler/externs/file_manager_private.js
diff --git a/third_party/closure_compiler/externs/file_manager_private.js b/third_party/closure_compiler/externs/file_manager_private.js
index 10a57a7a8c8f84bf86f82498b4a73e2863958734..63be2e8c207f01638be794852d4b8a613f14f2ef 100644
--- a/third_party/closure_compiler/externs/file_manager_private.js
+++ b/third_party/closure_compiler/externs/file_manager_private.js
@@ -270,17 +270,6 @@ chrome.fileManagerPrivate.addFileWatch = function(fileUrl, callback) {};
 chrome.fileManagerPrivate.removeFileWatch = function(fileUrl, callback) {};
 
 /**
- * Requests access to a file system volume. |volumeId| The ID of the file
- * system volume to request. The volume ID is delivered to JavaScript as
- * part of VolumeMetadata.
- * @param {string} volumeId
- * @param {function(FileSystem)} callback Returns a DOMFileSystem instance
- *     for the requested volume. Null if the caller has no appropriate
- *     permissions.
- */
-chrome.fileManagerPrivate.requestFileSystem = function(volumeId, callback) {};
-
-/**
  * Enables the extenal file scheme necessary to initiate drags to the browser
  * window for files on the external backend.
  */