Allow sky apps to be consumers of mojo services

sky/engine/bindings2/mojo_natives.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 MOJO_DART_EMBEDDER_MOJO_NATIVES_H_
-#define MOJO_DART_EMBEDDER_MOJO_NATIVES_H_
+#ifndef SKY_ENGINE_BINDINGS2_MOJO_NATIVES_H_
+#define SKY_ENGINE_BINDINGS2_MOJO_NATIVES_H_
 
 #include "dart/runtime/include/dart_api.h"
 
-namespace mojo {
-namespace dart {
+namespace blink {
 
 Dart_NativeFunction MojoNativeLookup(Dart_Handle name,
                                      int argument_count,
                                      bool* auto_setup_scope);
 
 const uint8_t* MojoNativeSymbol(Dart_NativeFunction nf);
 
-}  // namespace dart
-}  // namespace mojo
+}  // namespace blink
 
-#endif  // MOJO_DART_EMBEDDER_MOJO_NATIVES_H_
+#endif  // SKY_ENGINE_BINDINGS2_MOJO_NATIVES_H_