Make CEF compliant with Google/Chromium style (issue #473).

- Add a new check_style tool based on Google's cpplint that can be used to verify compliance of pending changes and specific files/directories.
- Update existing CEF source code to be compliant with the style requirements.

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@463 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

libcef/browser_socket_stream_bridge.h

@@ -2,8 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef _BROWSER_SOCKET_STREAM_BRIDGE_H
-#define _BROWSER_SOCKET_STREAM_BRIDGE_H
+#ifndef CEF_LIBCEF_BROWSER_SOCKET_STREAM_BRIDGE_H_
+#define CEF_LIBCEF_BROWSER_SOCKET_STREAM_BRIDGE_H_
+#pragma once
 
 #include "base/basictypes.h"
 
@@ -32,4 +33,4 @@ class BrowserSocketStreamBridge {
   DISALLOW_IMPLICIT_CONSTRUCTORS(BrowserSocketStreamBridge);
 };
 
-#endif  // _BROWSER_SOCKET_STREAM_BRIDGE_H
+#endif  // CEF_LIBCEF_BROWSER_SOCKET_STREAM_BRIDGE_H_