Add ImeMenuTray element.

ash/system/status_area_widget.h

Index: ash/system/status_area_widget.h
diff --git a/ash/system/status_area_widget.h b/ash/system/status_area_widget.h
index ce4eeb0fe8ad9edfff85fd35eb3d95ec420306a4..03b774de2f4c3a953f713a28b2777c5fc7d8f14b 100644
--- a/ash/system/status_area_widget.h
+++ b/ash/system/status_area_widget.h
@@ -20,6 +20,7 @@ class WebNotificationTray;
 class WmShelf;
 class WmWindow;
 #if defined(OS_CHROMEOS)
+class ImeMenuTray;
 class LogoutButtonTray;
 class VirtualKeyboardTray;
 #endif
@@ -56,6 +57,10 @@ class ASH_EXPORT StatusAreaWidget : public views::Widget {
 
   LoginStatus login_status() const { return login_status_; }
 
+#if defined(OS_CHROMEOS)
+  ImeMenuTray* ime_menu_tray() { return ime_menu_tray_; }

[James Cook, 2016/07/12 17:53:37]

nit: Because this is only used in tests, rename to ime_menu_tray_for_testing()
and move it down (just above the "private" section).

But if you anticipate your next CL will need to access this pointer via
StatusAreaWidget then this is fine.

[Azure Wei, 2016/07/14 02:57:02]

Removed this as it has not been used for now. Will add it when needed.  

+#endif
+
   // Returns true if the shelf should be visible. This is used when the
   // shelf is configured to auto-hide and test if the shelf should force
   // the shelf to remain visible.
@@ -79,6 +84,7 @@ class ASH_EXPORT StatusAreaWidget : public views::Widget {
 #if defined(OS_CHROMEOS)
   void AddLogoutButtonTray();
   void AddVirtualKeyboardTray();
+  void AddImeMenuTray();
 #endif
   void AddOverviewButtonTray();
 
@@ -90,6 +96,7 @@ class ASH_EXPORT StatusAreaWidget : public views::Widget {
 #if defined(OS_CHROMEOS)
   LogoutButtonTray* logout_button_tray_;
   VirtualKeyboardTray* virtual_keyboard_tray_;
+  ImeMenuTray* ime_menu_tray_;
 #endif
   LoginStatus login_status_;