chromeos: Move //ash/common files into //ash

//ash contains the "Aura Shell" system UI used by Chrome OS. For the
mustash servicification project we initially started moving files into
//ash/mus vs. //ash/aura vs. //ash/common. This allowed us to use DEPS
to ban aura includes. We now support aura on mus all the time, so we
don't need this directory structure.

BUG=690096
TEST=compiles, ash_unittests
[email protected]

Change-Id: I682586877b6c537d2db613664318bbc0365362c6

CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Change-Id: I682586877b6c537d2db613664318bbc0365362c6
Reviewed-on: https://chromium-review.googlesource.com/472548
Reviewed-by: James Cook <[email protected]>
Cr-Commit-Position: refs/heads/master@{#463140}
diff --git a/ash/root_window_controller_unittest.cc b/ash/root_window_controller_unittest.cc
index fc24224..caa522f 100644
--- a/ash/root_window_controller_unittest.cc
+++ b/ash/root_window_controller_unittest.cc
@@ -6,19 +6,19 @@
 
 #include <memory>
 
-#include "ash/common/session/session_controller.h"
-#include "ash/common/system/tray/system_tray_delegate.h"
-#include "ash/common/test/test_session_controller_client.h"
-#include "ash/common/wm/system_modal_container_layout_manager.h"
-#include "ash/common/wm/window_state.h"
-#include "ash/common/wm_shell.h"
-#include "ash/common/wm_window.h"
 #include "ash/public/cpp/shell_window_ids.h"
+#include "ash/session/session_controller.h"
 #include "ash/shell.h"
+#include "ash/system/tray/system_tray_delegate.h"
 #include "ash/test/ash_test_base.h"
+#include "ash/test/test_session_controller_client.h"
+#include "ash/wm/system_modal_container_layout_manager.h"
 #include "ash/wm/window_properties.h"
+#include "ash/wm/window_state.h"
 #include "ash/wm/window_state_aura.h"
 #include "ash/wm/window_util.h"
+#include "ash/wm_shell.h"
+#include "ash/wm_window.h"
 #include "base/command_line.h"
 #include "ui/aura/client/focus_change_observer.h"
 #include "ui/aura/client/focus_client.h"