[cros] Add support for transparent background in sign in screen.

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 1245 matching lines @@
 // use Chromium's network stack to fetch, and V8 to evaluate.
 const char kWinHttpProxyResolver[]          = "winhttp-proxy-resolver";
 
 #if defined(OS_CHROMEOS)
 // Disables gdata content provider.
 const char kDisableGData[]                  = "disable-gdata";
 
 // Enables Libcros.
 const char kEnableLibcros[]                = "enable-libcros";
 
+// Enables new OOBE/sign in design.
+extern const char kEnableNewOobe[]         = "enable-new-oobe";
+
 // Enables touchpad three-finger-click as middle button.
 const char kEnableTouchpadThreeFingerClick[]
     = "touchpad-enable-three-finger-click";
 
 // Skips OAuth part of ChromeOS login process.
 const char kSkipOAuthLogin[]                = "skip-oauth-login";
 
 // Enables device policy support on ChromeOS.
 const char kEnableDevicePolicy[]            = "enable-device-policy";
 
@@ skipping 161 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