Fix sky include guards to match Chromium style

sky/engine/public/web/WebLocalFrame.h

Index: sky/engine/public/web/WebLocalFrame.h
diff --git a/sky/engine/public/web/WebLocalFrame.h b/sky/engine/public/web/WebLocalFrame.h
index a711a8168541e99f0e3388fb8999cd2c64294766..33a592e29814196f9965c2c437bf3ac578b5729f 100644
--- a/sky/engine/public/web/WebLocalFrame.h
+++ b/sky/engine/public/web/WebLocalFrame.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef WebLocalFrame_h
-#define WebLocalFrame_h
+#ifndef SKY_ENGINE_PUBLIC_WEB_WEBLOCALFRAME_H_
+#define SKY_ENGINE_PUBLIC_WEB_WEBLOCALFRAME_H_
 
 #include "sky/engine/public/web/WebFrame.h"
 
@@ -31,4 +31,4 @@ public:
 
 } // namespace blink
 
-#endif // WebLocalFrame_h
+#endif  // SKY_ENGINE_PUBLIC_WEB_WEBLOCALFRAME_H_