Remove ShouldBlockShelfAutoHide().

ash/system/ime_menu/ime_menu_tray.cc

Index: ash/system/ime_menu/ime_menu_tray.cc
diff --git a/ash/system/ime_menu/ime_menu_tray.cc b/ash/system/ime_menu/ime_menu_tray.cc
index e160dbff5c36e770343276775b8a854d1438fae7..a0f8b56d7b4cd8718b6b0db9c63f6fbabcff0c07 100644
--- a/ash/system/ime_menu/ime_menu_tray.cc
+++ b/ash/system/ime_menu/ime_menu_tray.cc
@@ -287,7 +287,6 @@ ImeMenuTray::ImeMenuTray(WmShelf* wm_shelf)
       label_(new ImeMenuLabel()),
       show_keyboard_(false),
       force_show_keyboard_(false),
-      should_block_shelf_auto_hide_(false),
       keyboard_suppressed_(false),
       show_bubble_after_keyboard_hidden_(false) {
   SetInkDropMode(InkDropMode::ON);
@@ -325,7 +324,6 @@ void ImeMenuTray::ShowImeMenuBubble() {
 }
 
 void ImeMenuTray::ShowImeMenuBubbleInternal() {
-  should_block_shelf_auto_hide_ = true;
   views::TrayBubbleView::InitParams init_params(
       GetAnchorAlignment(), kTrayMenuMinimumWidth, kTrayMenuMinimumWidth);
   init_params.can_activate = true;
@@ -356,7 +354,6 @@ void ImeMenuTray::HideImeMenuBubble() {
   bubble_.reset();
   ime_list_view_ = nullptr;
   SetIsActive(false);
-  should_block_shelf_auto_hide_ = false;
   shelf()->UpdateAutoHideState();
 }
 
@@ -405,10 +402,6 @@ void ImeMenuTray::ShowKeyboardWithKeyset(const std::string& keyset) {
   }
 }
 
-bool ImeMenuTray::ShouldBlockShelfAutoHide() const {
-  return should_block_shelf_auto_hide_;
-}
-
 bool ImeMenuTray::ShouldShowEmojiHandwritingVoiceButtons() const {
   // Emoji, handwriting and voice input is not supported for these cases:
   // 1) features::kEHVInputOnImeMenu is not enabled.