Hide handwriting and voice buttons when keyboard is in restricted state

ash/system/ime_menu/ime_menu_tray.h

Index: ash/system/ime_menu/ime_menu_tray.h
diff --git a/ash/system/ime_menu/ime_menu_tray.h b/ash/system/ime_menu/ime_menu_tray.h
index 27351b6c4f6c8368bad60fe3d1eb6d37528f8e92..ac4f37619a048d995311eeaba51a0e2b76856a77 100644
--- a/ash/system/ime_menu/ime_menu_tray.h
+++ b/ash/system/ime_menu/ime_menu_tray.h
@@ -52,7 +52,7 @@ class ASH_EXPORT ImeMenuTray : public TrayBackgroundView,
   // Returns true if the menu should show emoji, handwriting and voice buttons
   // on the bottom. Otherwise, the menu will show a 'Customize...' bottom row
   // for non-MD UI, and a Settings button in the title row for MD.
-  bool ShouldShowEmojiHandwritingVoiceButtons() const;
+  bool ShouldShowBottomButtons();
 
   // Returns whether the virtual keyboard toggle should be shown in shown in the
   // opt-in IME menu.
@@ -112,6 +112,9 @@ class ASH_EXPORT ImeMenuTray : public TrayBackgroundView,
   bool force_show_keyboard_;
   bool keyboard_suppressed_;
   bool show_bubble_after_keyboard_hidden_;
+  bool emoji_enabled_;
+  bool handwriting_enabled_;
+  bool voice_enabled_;
 
   base::WeakPtrFactory<ImeMenuTray> weak_ptr_factory_;