Fix tonic include guards

tonic/dart_wrapper_info.h

 // Copyright 2015 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_TONIC_DART_WRAPPER_INFO_H_
-#define SKY_ENGINE_TONIC_DART_WRAPPER_INFO_H_
+#ifndef TONIC_DART_WRAPPER_INFO_H_
+#define TONIC_DART_WRAPPER_INFO_H_
 
 #include "base/macros.h"
 
 namespace tonic {
 class DartWrappable;
 
 typedef void (*DartWrappableAccepter)(DartWrappable*);
 
 struct DartWrapperInfo {
   const char* interface_name;
   const size_t size_in_bytes;
   const DartWrappableAccepter ref_object;
   const DartWrappableAccepter deref_object;
 
  private:
   DartWrapperInfo(const DartWrapperInfo&) = delete;
   DartWrapperInfo& operator=(const DartWrapperInfo&) = delete;
 };
 
 }  // namespace tonic
 
-#endif  // SKY_ENGINE_TONIC_DART_WRAPPER_INFO_H_
+#endif  // TONIC_DART_WRAPPER_INFO_H_