Fix sky include guards to match Chromium style

sky/engine/core/loader/FrameLoader.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) Research In Motion Limited 2009. All rights reserved.
  * Copyright (C) 2011 Google 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:
  *
@@ skipping 11 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 FrameLoader_h
-#define FrameLoader_h
+#ifndef SKY_ENGINE_CORE_LOADER_FRAMELOADER_H_
+#define SKY_ENGINE_CORE_LOADER_FRAMELOADER_H_
 
 #include "sky/engine/core/fetch/ResourceLoaderOptions.h"
 #include "sky/engine/core/loader/FrameLoaderTypes.h"
 #include "sky/engine/platform/Timer.h"
 #include "sky/engine/platform/network/ResourceRequest.h"
 #include "sky/engine/wtf/Forward.h"
 #include "sky/engine/wtf/HashSet.h"
 #include "sky/engine/wtf/OwnPtr.h"
 
 namespace blink {
@@ skipping 40 matching lines @@
 private:
     LocalFrame* m_frame;
 
     OwnPtr<FetchContext> m_fetchContext;
 
     bool m_inStopAllLoaders;
 };
 
 } // namespace blink
 
-#endif // FrameLoader_h
+#endif  // SKY_ENGINE_CORE_LOADER_FRAMELOADER_H_