Move stash_backend into extensions/browser/mojo.

extensions/browser/mojo/stash_backend.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 EXTENSIONS_BROWSER_STASH_BACKEND_H_
-#define EXTENSIONS_BROWSER_STASH_BACKEND_H_
+#ifndef EXTENSIONS_BROWSER_MOJO_STASH_BACKEND_H_
+#define EXTENSIONS_BROWSER_MOJO_STASH_BACKEND_H_
 
 #include <vector>
 
 #include "base/memory/linked_ptr.h"
 #include "base/memory/weak_ptr.h"
-#include "extensions/common/stash.mojom.h"
+#include "extensions/common/mojo/stash.mojom.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
 
 namespace extensions {
 
 // A backend that provides access to StashService for a single extension.
 class StashBackend {
  public:
   StashBackend();
   ~StashBackend();
 
@@ skipping 12 matching lines @@
   // The objects that have been stashed.
   mojo::Array<StashedObjectPtr> stashed_objects_;
 
   base::WeakPtrFactory<StashBackend> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(StashBackend);
 };
 
 }  // namespace extensions
 
-#endif  // EXTENSIONS_BROWSER_STASH_BACKEND_H_
+#endif  // EXTENSIONS_BROWSER_MOJO_STASH_BACKEND_H_