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

mojo/shell/data_pipe_peek.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 SHELL_APPLICATION_MANAGER_DATA_PIPE_SEEK_H_
-#define SHELL_APPLICATION_MANAGER_DATA_PIPE_SEEK_H_
+#ifndef MOJO_SHELL_DATA_PIPE_PEEK_H_
+#define MOJO_SHELL_DATA_PIPE_PEEK_H_
 
 #include <string>
 
 #include "mojo/public/cpp/system/core.h"
 
 namespace mojo {
 namespace shell {
 
 // The Peek functions are only intended to be used by the
 // DyanmicApplicationLoader class for discovering the type of a
@@ skipping 11 matching lines @@
 // Return true and the first bytes_length bytes from source. Return false
 // if the timeout is exceeded.
 bool BlockingPeekNBytes(DataPipeConsumerHandle source,
                         std::string* bytes,
                         size_t bytes_length,
                         MojoDeadline timeout);
 
 }  // namespace shell
 }  // namespace mojo
 
-#endif  // SHELL_APPLICATION_MANAGER_DATA_PIPE_SEEK_H_
+#endif  // MOJO_SHELL_DATA_PIPE_PEEK_H_