Add flag to enable syncfs directory support to about:flags.

chrome/common/chrome_switches.cc

 // 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.
 
 #include "chrome/common/chrome_switches.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 
 namespace switches {
@@ skipping 1347 matching lines @@
 const char kSyncThrowUnrecoverableError[]   = "sync-throw-unrecoverable-error";
 
 
 // Tries to connect to XMPP using SSLTCP first (for testing).
 const char kSyncTrySsltcpFirstForXmpp[]     = "sync-try-ssltcp-first-for-xmpp";
 
 // Enables deferring sync backend initialization until user initiated changes
 // occur.
 const char kSyncEnableDeferredStartup[]     = "sync-enable-deferred-startup";
 
+// Enables directory support for sync filesystem
+const char kSyncfsEnableDirectoryOperation[] =
+    "enable-syncfs-directory-operation";
+
 // Enables tab dragging to create a real browser.
 const char kTabBrowserDragging[]            = "enable-tab-browser-dragging";
 
 // Enables tab capture.
 const char kTabCapture[]                    = "enable-tab-capture";
 
 // Passes the name of the current running automated test to Chrome.
 const char kTestName[]                      = "test-name";
 
 // Runs the security test for the NaCl loader sandbox.
@@ skipping 306 matching lines @@
 
 // -----------------------------------------------------------------------------
 // DO NOT ADD YOUR CRAP TO THE BOTTOM OF THIS FILE.
 //
 // You were going to just dump your switches here, weren't you? Instead, please
 // put them in alphabetical order above, or in order inside the appropriate
 // ifdef at the bottom. The order should match the header.
 // -----------------------------------------------------------------------------
 
 }  // namespace switches