Revert "Move mojo edk into mojo/edk"

mojo/system/message_pipe_endpoint.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 MOJO_EDK_SYSTEM_MESSAGE_PIPE_ENDPOINT_H_
-#define MOJO_EDK_SYSTEM_MESSAGE_PIPE_ENDPOINT_H_
+#ifndef MOJO_SYSTEM_MESSAGE_PIPE_ENDPOINT_H_
+#define MOJO_SYSTEM_MESSAGE_PIPE_ENDPOINT_H_
 
 #include <stdint.h>
 
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
-#include "mojo/edk/system/dispatcher.h"
-#include "mojo/edk/system/memory.h"
-#include "mojo/edk/system/message_in_transit.h"
-#include "mojo/edk/system/system_impl_export.h"
 #include "mojo/public/c/system/message_pipe.h"
 #include "mojo/public/c/system/types.h"
+#include "mojo/system/dispatcher.h"
+#include "mojo/system/memory.h"
+#include "mojo/system/message_in_transit.h"
+#include "mojo/system/system_impl_export.h"
 
 namespace mojo {
 namespace system {
 
 class ChannelEndpoint;
 class Waiter;
 
 // This is an interface to one of the ends of a message pipe, and is used by
 // |MessagePipe|. Its most important role is to provide a sink for messages
 // (i.e., a place where messages can be sent). It has a secondary role: When the
@@ skipping 48 matching lines @@
  protected:
   MessagePipeEndpoint() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MessagePipeEndpoint);
 };
 
 }  // namespace system
 }  // namespace mojo
 
-#endif  // MOJO_EDK_SYSTEM_MESSAGE_PIPE_ENDPOINT_H_
+#endif  // MOJO_SYSTEM_MESSAGE_PIPE_ENDPOINT_H_