[ash-md] Add on-screen keyboard toggle row in IME menu view.

ash/common/system/chromeos/ime_menu/ime_list_view.h

Index: ash/common/system/chromeos/ime_menu/ime_list_view.h
diff --git a/ash/common/system/chromeos/ime_menu/ime_list_view.h b/ash/common/system/chromeos/ime_menu/ime_list_view.h
index 83e5980cd48af7da73ed1d35f0b50a301ebea501..89da8ca5c6cc0819955edd9b6947d70c00473462 100644
--- a/ash/common/system/chromeos/ime_menu/ime_list_view.h
+++ b/ash/common/system/chromeos/ime_menu/ime_list_view.h
@@ -7,6 +7,7 @@
 
 #include "ash/common/system/tray/ime_info.h"
 #include "ash/common/system/tray/tray_details_view.h"
+#include "ui/views/controls/button/button.h"
 
 namespace ash {
 // The detailed view for showing IME list.
@@ -34,7 +35,12 @@ class ImeListView : public TrayDetailsView {
   // TrayDetailsView:
   void HandleViewClicked(views::View* view) override;
 
+  // views::ButtonListener:
+  void ButtonPressed(views::Button* sender, const ui::Event& event) override;
+
  private:
+  class MaterialKeyboardStatusRowView;
+
   // To allow the test class to access |ime_map_|.
   friend class ImeMenuTrayTest;
 
@@ -53,9 +59,14 @@ class ImeListView : public TrayDetailsView {
   // view.
   void AppendKeyboardStatus();
 
+  // Appends the meterial on-screen keyboard status to the top area of the
+  // detailed view.
+  void AppendMaterialKeyboardStatus();
+
   std::map<views::View*, std::string> ime_map_;
   std::map<views::View*, std::string> property_map_;
   views::View* keyboard_status_;
+  MaterialKeyboardStatusRowView* material_keyboard_statuts_view_;
 
   DISALLOW_COPY_AND_ASSIGN(ImeListView);
 };