Add the boilerplate for actions to File System Provider API.

chrome/browser/chromeos/file_system_provider/request_manager.cc

 // 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.
 
 #include "chrome/browser/chromeos/file_system_provider/request_manager.h"
 
 #include "base/files/file.h"
 #include "base/stl_util.h"
 #include "base/trace_event/trace_event.h"
 #include "chrome/browser/extensions/window_controller_list.h"
@@ skipping 12 matching lines @@
 const int kDefaultTimeout = 10;
 
 }  // namespace
 
 std::string RequestTypeToString(RequestType type) {
   switch (type) {
     case REQUEST_UNMOUNT:
       return "REQUEST_UNMOUNT";
     case GET_METADATA:
       return "GET_METADATA";
+    case GET_ACTIONS:
+      return "GET_ACTIONS";
     case READ_DIRECTORY:
       return "READ_DIRECTORY";
     case OPEN_FILE:
       return "OPEN_FILE";
     case CLOSE_FILE:
       return "CLOSE_FILE";
     case READ_FILE:
       return "READ_FILE";
     case CREATE_DIRECTORY:
       return "CREATE_DIRECTORY";
@@ skipping 254 matching lines @@
     notification_manager_->HideUnresponsiveNotification(request_id);
 
   FOR_EACH_OBSERVER(Observer, observers_, OnRequestDestroyed(request_id));
 
   TRACE_EVENT_ASYNC_END0(
       "file_system_provider", "RequestManager::Request", request_id);
 }
 
 }  // namespace file_system_provider
 }  // namespace chromeos