Revert "Move mojo edk into mojo/edk"

mojo/system/proxy_message_pipe_endpoint.h

Index: mojo/system/proxy_message_pipe_endpoint.h
diff --git a/mojo/edk/system/proxy_message_pipe_endpoint.h b/mojo/system/proxy_message_pipe_endpoint.h
similarity index 82%
rename from mojo/edk/system/proxy_message_pipe_endpoint.h
rename to mojo/system/proxy_message_pipe_endpoint.h
index c8842405898318329fbbae8dd2640f93bfd8fc55..936e2aefe39d9cad1c50ecdcb486af242e5c7bc0 100644
--- a/mojo/edk/system/proxy_message_pipe_endpoint.h
+++ b/mojo/system/proxy_message_pipe_endpoint.h
@@ -2,14 +2,14 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef MOJO_EDK_SYSTEM_PROXY_MESSAGE_PIPE_ENDPOINT_H_
-#define MOJO_EDK_SYSTEM_PROXY_MESSAGE_PIPE_ENDPOINT_H_
+#ifndef MOJO_SYSTEM_PROXY_MESSAGE_PIPE_ENDPOINT_H_
+#define MOJO_SYSTEM_PROXY_MESSAGE_PIPE_ENDPOINT_H_
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
-#include "mojo/edk/system/message_in_transit.h"
-#include "mojo/edk/system/message_pipe_endpoint.h"
-#include "mojo/edk/system/system_impl_export.h"
+#include "mojo/system/message_in_transit.h"
+#include "mojo/system/message_pipe_endpoint.h"
+#include "mojo/system/system_impl_export.h"
 
 namespace mojo {
 namespace system {
@@ -50,4 +50,4 @@ class MOJO_SYSTEM_IMPL_EXPORT ProxyMessagePipeEndpoint
 }  // namespace system
 }  // namespace mojo
 
-#endif  // MOJO_EDK_SYSTEM_PROXY_MESSAGE_PIPE_ENDPOINT_H_
+#endif  // MOJO_SYSTEM_PROXY_MESSAGE_PIPE_ENDPOINT_H_