Mojo: Move public/environment to public/cpp/environment.

mojo/public/cpp/environment/environment.h

Index: mojo/public/cpp/environment/environment.h
diff --git a/mojo/public/environment/environment.h b/mojo/public/cpp/environment/environment.h
similarity index 73%
rename from mojo/public/environment/environment.h
rename to mojo/public/cpp/environment/environment.h
index aa6fb5145b8043f84f2c29ae21a55cddd3561162..f75e2f77851d8da0a40a52f6e3c305c57e2b7fd9 100644
--- a/mojo/public/environment/environment.h
+++ b/mojo/public/cpp/environment/environment.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 MOJO_PUBLIC_ENVIRONMENT_ENVIRONMENT_H_
-#define MOJO_PUBLIC_ENVIRONMENT_ENVIRONMENT_H_
+#ifndef MOJO_PUBLIC_CPP_ENVIRONMENT_ENVIRONMENT_H_
+#define MOJO_PUBLIC_CPP_ENVIRONMENT_ENVIRONMENT_H_
 
 #include "mojo/public/cpp/system/macros.h"
 
@@ -21,4 +21,4 @@ class Environment {
 
 }  // namespace mojo
 
-#endif  // MOJO_PUBLIC_ENVIRONMENT_ENVIRONMENT_H_
+#endif  // MOJO_PUBLIC_CPP_ENVIRONMENT_ENVIRONMENT_H_