Mojo: Move mojo/system/embedder to mojo/embedder.

mojo/embedder/scoped_platform_handle.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_SYSTEM_EMBEDDER_SCOPED_PLATFORM_HANDLE_H_
-#define MOJO_SYSTEM_EMBEDDER_SCOPED_PLATFORM_HANDLE_H_
+#ifndef MOJO_EMBEDDER_SCOPED_PLATFORM_HANDLE_H_
+#define MOJO_EMBEDDER_SCOPED_PLATFORM_HANDLE_H_
 
 #include "base/compiler_specific.h"
 #include "base/move.h"
-#include "mojo/system/embedder/platform_handle.h"
+#include "mojo/embedder/platform_handle.h"
 #include "mojo/system/system_impl_export.h"
 
 namespace mojo {
 namespace embedder {
 
 class MOJO_SYSTEM_IMPL_EXPORT ScopedPlatformHandle {
   MOVE_ONLY_TYPE_FOR_CPP_03(ScopedPlatformHandle, RValue)
 
  public:
   ScopedPlatformHandle() {}
@@ skipping 30 matching lines @@
     return handle_.is_valid();
   }
 
  private:
   PlatformHandle handle_;
 };
 
 }  // namespace embedder
 }  // namespace mojo
 
-#endif  // MOJO_SYSTEM_EMBEDDER_SCOPED_PLATFORM_HANDLE_H_
+#endif  // MOJO_EMBEDDER_SCOPED_PLATFORM_HANDLE_H_