Fix sky include guards to match Chromium style

sky/engine/core/rendering/PaintInfo.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
-#ifndef PaintInfo_h
-#define PaintInfo_h
+#ifndef SKY_ENGINE_CORE_RENDERING_PAINTINFO_H_
+#define SKY_ENGINE_CORE_RENDERING_PAINTINFO_H_
 
 #include <limits>
 #include "sky/engine/core/rendering/PaintPhase.h"
 #include "sky/engine/platform/geometry/IntRect.h"
 #include "sky/engine/platform/geometry/LayoutRect.h"
 #include "sky/engine/platform/graphics/GraphicsContext.h"
 #include "sky/engine/platform/transforms/AffineTransform.h"
 #include "sky/engine/wtf/HashMap.h"
 #include "sky/engine/wtf/ListHashSet.h"
 
@@ skipping 72 matching lines @@
     PaintBehavior paintBehavior;
     RenderObject* paintingRoot; // used to draw just one element and its visual kids
 
 private:
     const RenderLayerModelObject* m_paintContainer; // the layer object that originates the current painting
     ListHashSet<RenderInline*>* m_outlineObjects; // used to list outlines that should be painted by a block with inline children
 };
 
 } // namespace blink
 
-#endif // PaintInfo_h
+#endif  // SKY_ENGINE_CORE_RENDERING_PAINTINFO_H_