Reorganize apps/shell into app, browser and common directories

apps/shell/common/shell_extensions_client.h

 // Copyright 2013 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 APPS_SHELL_SHELL_EXTENSIONS_CLIENT_H_
-#define APPS_SHELL_SHELL_EXTENSIONS_CLIENT_H_
+#ifndef APPS_SHELL_COMMON_SHELL_EXTENSIONS_CLIENT_H_
+#define APPS_SHELL_COMMON_SHELL_EXTENSIONS_CLIENT_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "extensions/common/extensions_client.h"
 
 namespace apps {
 
 // The app_shell implementation of ExtensionsClient.
 class ShellExtensionsClient : public extensions::ExtensionsClient {
  public:
@@ skipping 22 matching lines @@
       OVERRIDE;
 
  private:
   ScriptingWhitelist scripting_whitelist_;
 
   DISALLOW_COPY_AND_ASSIGN(ShellExtensionsClient);
 };
 
 }  // namespace apps
 
-#endif  // APPS_SHELL_SHELL_EXTENSIONS_CLIENT_H_
+#endif  // APPS_SHELL_COMMON_SHELL_EXTENSIONS_CLIENT_H_