Fix sky include guards to match Chromium style

sky/engine/v8_inspector/inspector_host.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 SKY_ENGINE_V8_INSPECTOR_INSPECTOR_HOST_H_
 #define SKY_ENGINE_V8_INSPECTOR_INSPECTOR_HOST_H_
 
 namespace mojo {
 class Shell;
 }
 namespace v8 {
 class Isolate;
 class Context;
 template <class T>
 class Local;
 }
 
 namespace inspector {
 
 class InspectorHost {
  public:
   virtual mojo::Shell* GetShell() = 0;
   virtual v8::Isolate* GetIsolate() = 0;
   virtual v8::Local<v8::Context> GetContext() = 0;
 };
 
 }  // namespace inspector
 
-#endif  // SKY_ENGINE_V8_INSPECTOR_INSPECTOR_HOST_H_
+#endif  // SKY_ENGINE_V8_INSPECTOR_INSPECTOR_HOST_H_