Separate mojo/shell into a runner and the application manager (shell)

mojo/shell/fetcher.h

 // Copyright 2015 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 SHELL_APPLICATION_MANAGER_FETCHER_H_
-#define SHELL_APPLICATION_MANAGER_FETCHER_H_
+#ifndef MOJO_SHELL_FETCHER_H_
+#define MOJO_SHELL_FETCHER_H_
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 
 #include "mojo/services/network/public/interfaces/url_loader.mojom.h"
 
 class GURL;
 
 namespace base {
 class FilePath;
@@ skipping 49 matching lines @@
  protected:
   static const char kMojoMagic[];
   static const size_t kMaxShebangLength;
 
   FetchCallback loader_callback_;
 };
 
 }  // namespace shell
 }  // namespace mojo
 
-#endif  // SHELL_APPLICATION_MANAGER_FETCHER_H_
+#endif  // MOJO_SHELL_FETCHER_H_