Fix sky include guards to match Chromium style

sky/engine/core/rendering/style/AppliedTextDecoration.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef AppliedTextDecoration_h
-#define AppliedTextDecoration_h
+#ifndef SKY_ENGINE_CORE_RENDERING_STYLE_APPLIEDTEXTDECORATION_H_
+#define SKY_ENGINE_CORE_RENDERING_STYLE_APPLIEDTEXTDECORATION_H_
 
 #include "sky/engine/core/css/StyleColor.h"
 #include "sky/engine/core/rendering/style/RenderStyleConstants.h"
 
 namespace blink {
 
 class AppliedTextDecoration {
 public:
     AppliedTextDecoration(TextDecoration, TextDecorationStyle, StyleColor);
     explicit AppliedTextDecoration(TextDecoration);
     AppliedTextDecoration();
 
     TextDecoration line() const { return static_cast<TextDecoration>(m_line); }
     TextDecorationStyle style() const { return static_cast<TextDecorationStyle>(m_style); }
 
     bool isSimpleUnderline() const { return m_line == TextDecorationUnderline && m_style == TextDecorationStyleSolid && m_color.isCurrentColor(); }
     bool operator==(const AppliedTextDecoration&) const;
     bool operator!=(const AppliedTextDecoration& o) const { return !(*this == o); }
 
 private:
     unsigned m_line : TextDecorationBits;
     unsigned m_style : 3; // TextDecorationStyle
     StyleColor m_color;
 };
 
 } // namespace blink
 
-#endif // AppliedTextDecoration_h
+#endif  // SKY_ENGINE_CORE_RENDERING_STYLE_APPLIEDTEXTDECORATION_H_