Revert "Move mojo edk into mojo/edk"

mojo/system/data_pipe.cc

Index: mojo/system/data_pipe.cc
diff --git a/mojo/edk/system/data_pipe.cc b/mojo/system/data_pipe.cc
similarity index 98%
rename from mojo/edk/system/data_pipe.cc
rename to mojo/system/data_pipe.cc
index 3aca67a8f0c6a49acc38777f8ed402f7b9254053..767657d4280f954f57e0b976219a60dcdd9b5ca3 100644
--- a/mojo/edk/system/data_pipe.cc
+++ b/mojo/system/data_pipe.cc
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "mojo/edk/system/data_pipe.h"
+#include "mojo/system/data_pipe.h"
 
 #include <string.h>
 
@@ -11,10 +11,10 @@
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
-#include "mojo/edk/system/constants.h"
-#include "mojo/edk/system/memory.h"
-#include "mojo/edk/system/options_validation.h"
-#include "mojo/edk/system/waiter_list.h"
+#include "mojo/system/constants.h"
+#include "mojo/system/memory.h"
+#include "mojo/system/options_validation.h"
+#include "mojo/system/waiter_list.h"
 
 namespace mojo {
 namespace system {