Do not activate TrayBubbleView by default

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 b0c7fdea8e52ef061e87e982ecd75cce72a76363..b3c803c623917f79f5b1862beff147b593a2c5a9 100644
--- a/ash/system/ime_menu/ime_menu_tray.cc
+++ b/ash/system/ime_menu/ime_menu_tray.cc
@@ -4,6 +4,7 @@
 
 #include "ash/system/ime_menu/ime_menu_tray.h"
 
+#include "ash/accelerators/accelerator_controller.h"
 #include "ash/accessibility_delegate.h"
 #include "ash/ash_constants.h"
 #include "ash/root_window_controller.h"
@@ -297,7 +298,7 @@ ImeMenuTray::ImeMenuTray(Shelf* shelf)
 
 ImeMenuTray::~ImeMenuTray() {
   if (bubble_)
-    bubble_->bubble_view()->reset_delegate();
+    bubble_->bubble_view()->ResetDelegate();
   SystemTrayNotifier* tray_notifier = Shell::Get()->system_tray_notifier();
   tray_notifier->RemoveIMEObserver(this);
   tray_notifier->RemoveVirtualKeyboardObserver(this);
@@ -469,10 +470,26 @@ void ImeMenuTray::OnMouseEnteredView() {}
 
 void ImeMenuTray::OnMouseExitedView() {}
 
+void ImeMenuTray::RegisterAccelerators(
+    const std::vector<ui::Accelerator>& accelerators,
+    views::TrayBubbleView* tray_bubble_view) {
+  Shell::Get()->accelerator_controller()->Register(accelerators,
+                                                   tray_bubble_view);
+}
+
+void ImeMenuTray::UnregisterAllAccelerators(
+    views::TrayBubbleView* tray_bubble_view) {
+  Shell::Get()->accelerator_controller()->UnregisterAll(tray_bubble_view);
+}
+
 base::string16 ImeMenuTray::GetAccessibleNameForBubble() {
   return l10n_util::GetStringUTF16(IDS_ASH_IME_MENU_ACCESSIBLE_NAME);
 }
 
+bool ImeMenuTray::ShouldEnableExtraKeyboardAccessibility() {
+  return Shell::Get()->accessibility_delegate()->IsSpokenFeedbackEnabled();
+}
+
 void ImeMenuTray::HideBubble(const views::TrayBubbleView* bubble_view) {
   HideBubbleWithView(bubble_view);
 }