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/http_header_utils.h

@@ -2,8 +2,11 @@
 // reserved. Use of this source code is governed by a BSD-style license that
 // can be found in the LICENSE file.
 
-#ifndef _HTTP_HEADER_UTILS_H
-#define _HTTP_HEADER_UTILS_H
+#ifndef CEF_LIBCEF_HTTP_HEADER_UTILS_H_
+#define CEF_LIBCEF_HTTP_HEADER_UTILS_H_
+#pragma once
+
+#include <string>
 
 #include "include/cef_request.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebHTTPHeaderVisitor.h"
@@ -13,24 +16,22 @@ namespace HttpHeaderUtils {
 
 typedef CefRequest::HeaderMap HeaderMap;
 
-class HeaderVisitor : public WebKit::WebHTTPHeaderVisitor 
-{
-public:
-  HeaderVisitor(HeaderMap* map) : map_(map) {}
+class HeaderVisitor : public WebKit::WebHTTPHeaderVisitor {
+ public:
+  explicit HeaderVisitor(HeaderMap* map) : map_(map) {}
 
   virtual void visitHeader(const WebKit::WebString& name,
-                           const WebKit::WebString& value)
-  {
+                           const WebKit::WebString& value) {
     map_->insert(std::make_pair(string16(name), string16(value)));
   }
 
-private:
+ private:
   HeaderMap* map_;
 };
 
 std::string GenerateHeaders(const HeaderMap& map);
 void ParseHeaders(const std::string& header_str, HeaderMap& map);
 
-}; // namespace HttpHeaderUtils
+};  // namespace HttpHeaderUtils
 
-#endif // _HTTP_HEADER_UTILS_H
+#endif  // CEF_LIBCEF_HTTP_HEADER_UTILS_H_