Fix sky include guards to match Chromium style

sky/engine/platform/network/HTTPParsers.h

 /*
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2011 Apple Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
@@ skipping 10 matching lines @@
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef HTTPParsers_h
-#define HTTPParsers_h
+#ifndef SKY_ENGINE_PLATFORM_NETWORK_HTTPPARSERS_H_
+#define SKY_ENGINE_PLATFORM_NETWORK_HTTPPARSERS_H_
 
 #include "sky/engine/platform/PlatformExport.h"
 #include "sky/engine/wtf/Forward.h"
 #include "sky/engine/wtf/Vector.h"
 
 namespace blink {
 
 typedef enum {
     ContentDispositionNone,
     ContentDispositionInline,
@@ skipping 50 matching lines @@
 PLATFORM_EXPORT ContentTypeOptionsDisposition parseContentTypeOptionsHeader(const String& header);
 
 // Parsing Complete HTTP Messages.
 enum HTTPVersion { Unknown, HTTP_1_0, HTTP_1_1 };
 PLATFORM_EXPORT size_t parseHTTPRequestLine(const char* data, size_t length, String& failureReason, String& method, String& url, HTTPVersion&);
 PLATFORM_EXPORT size_t parseHTTPHeader(const char* data, size_t length, String& failureReason, AtomicString& nameStr, AtomicString& valueStr);
 PLATFORM_EXPORT size_t parseHTTPRequestBody(const char* data, size_t length, Vector<unsigned char>& body);
 
 }
 
-#endif
+#endif  // SKY_ENGINE_PLATFORM_NETWORK_HTTPPARSERS_H_