Reorganize apps/shell into app, browser and common directories

apps/shell/browser/shell_app_sorting.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_APP_SORTING_H_
-#define APPS_SHELL_SHELL_APP_SORTING_H_
+#ifndef APPS_SHELL_BROWSER_SHELL_APP_SORTING_H_
+#define APPS_SHELL_BROWSER_SHELL_APP_SORTING_H_
 
 #include "base/compiler_specific.h"
 #include "extensions/browser/app_sorting.h"
 
 namespace apps {
 
 // A stub AppSorting. Since app_shell only runs a single app we don't need to
 // sort them.
 class ShellAppSorting : public extensions::AppSorting {
  public:
@@ skipping 37 matching lines @@
   virtual syncer::StringOrdinal PageIntegerAsStringOrdinal(
       size_t page_index) OVERRIDE;
   virtual void MarkExtensionAsHidden(const std::string& extension_id) OVERRIDE;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ShellAppSorting);
 };
 
 }  // namespace apps
 
-#endif  // APPS_SHELL_SHELL_APP_SORTING_H_
+#endif  // APPS_SHELL_BROWSER_SHELL_APP_SORTING_H_