Revert "chromeos: Move files in //ash/common to //ash, part 1"

ash/common/system/chromeos/network/tray_network_state_observer.cc

Index: ash/common/system/chromeos/network/tray_network_state_observer.cc
diff --git a/ash/system/network/tray_network_state_observer.cc b/ash/common/system/chromeos/network/tray_network_state_observer.cc
similarity index 93%
rename from ash/system/network/tray_network_state_observer.cc
rename to ash/common/system/chromeos/network/tray_network_state_observer.cc
index 60e05c4500bb9ad127f942141357d169f026fc2f..b1d990bd48ef8600154f6f5b8e19fb6ea33db9c9 100644
--- a/ash/system/network/tray_network_state_observer.cc
+++ b/ash/common/system/chromeos/network/tray_network_state_observer.cc
@@ -2,13 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "ash/system/network/tray_network_state_observer.h"
+#include "ash/common/system/chromeos/network/tray_network_state_observer.h"
 
 #include <set>
 #include <string>
 
-#include "ash/system/network/network_icon.h"
-#include "ash/system/tray/system_tray.h"
+#include "ash/common/system/chromeos/network/network_icon.h"
+#include "ash/common/system/tray/system_tray.h"
 #include "base/location.h"
 #include "chromeos/network/network_state.h"
 #include "chromeos/network/network_state_handler.h"