Block shelf auto hidden when opt-in IME menu is shown.

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

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ASH_COMMON_SYSTEM_CHROMEOS_IME_MENU_IME_MENU_TRAY_H_
 #define ASH_COMMON_SYSTEM_CHROMEOS_IME_MENU_IME_MENU_TRAY_H_
 
 #include "ash/ash_export.h"
 #include "ash/common/system/ime/ime_observer.h"
 #include "ash/common/system/tray/ime_info.h"
@@ skipping 28 matching lines @@
   // Hides the IME menu bubble and lowlights the button.
   void HideImeMenuBubble();
 
   // Returns true if the IME menu bubble has been shown.
   bool IsImeMenuBubbleShown();
 
   // Shows the virtual keyboard with the given keyset: emoji, handwriting or
   // voice.
   void ShowKeyboardWithKeyset(const std::string& keyset);
 
+  // Returns true if it should block the auto hide behavior of the shelf.
+  bool ShouldBlockShelfAutoHide() const;
+
   // TrayBackgroundView:
   void SetShelfAlignment(ShelfAlignment alignment) override;
   base::string16 GetAccessibleNameForTray() override;
   void HideBubbleWithView(const views::TrayBubbleView* bubble_view) override;
   void ClickedOutsideBubble() override;
   bool PerformAction(const ui::Event& event) override;
 
   // IMEObserver:
   void OnIMERefresh() override;
   void OnIMEMenuActivationChanged(bool is_activated) override;
@@ skipping 25 matching lines @@
   void UpdateTrayLabel();
 
   // Bubble for default and detailed views.
   std::unique_ptr<TrayBubbleWrapper> bubble_;
   ImeListView* ime_list_view_;
 
   views::Label* label_;
   IMEInfo current_ime_;
   bool show_keyboard_;
   bool force_show_keyboard_;
+  bool should_block_shelf_auto_hide_;
 
   DISALLOW_COPY_AND_ASSIGN(ImeMenuTray);
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_SYSTEM_CHROMEOS_IME_MENU_IME_MENU_TRAY_H_