Do not activate TrayBubbleView by default

ash/system/web_notification/web_notification_tray.cc

 // Copyright (c) 2012 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.
 
 #include "ash/system/web_notification/web_notification_tray.h"
 
+#include "ash/accelerators/accelerator_controller.h"
+#include "ash/accessibility_delegate.h"
 #include "ash/resources/vector_icons/vector_icons.h"
 #include "ash/root_window_controller.h"
 #include "ash/session/session_controller.h"
 #include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_constants.h"
 #include "ash/shell.h"
 #include "ash/system/status_area_widget.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/tray/tray_bubble_wrapper.h"
@@ skipping 404 matching lines @@
   if (message_center_bubble()) {
     message_center_bubble()->bubble_view()->UpdateBubble();
     UpdateBubbleViewArrow(message_center_bubble()->bubble_view());
   }
 }
 
 base::string16 WebNotificationTray::GetAccessibleNameForTray() {
   return l10n_util::GetStringUTF16(IDS_MESSAGE_CENTER_ACCESSIBLE_NAME);
 }
 
+bool WebNotificationTray::ShouldEnableExtraKeyboardAccessibility() {

[James Cook, 2017/06/09 16:06:13]

nit: functions in .cc should match order in header

[yawano, 2017/06/12 09:11:03]

Done.

+  return Shell::Get()->accessibility_delegate()->IsSpokenFeedbackEnabled();
+}
+
 void WebNotificationTray::HideBubbleWithView(
     const views::TrayBubbleView* bubble_view) {
   if (message_center_bubble() &&
       bubble_view == message_center_bubble()->bubble_view()) {
     message_center_tray_->HideMessageCenterBubble();
   } else if (popup_collection_.get()) {
     message_center_tray_->HidePopupBubble();
   }
 }
 
 bool WebNotificationTray::PerformAction(const ui::Event& event) {
   if (message_center_bubble())
     message_center_tray_->HideMessageCenterBubble();
   else
     message_center_tray_->ShowMessageCenterBubble();
   return true;
 }
 
 void WebNotificationTray::BubbleViewDestroyed() {
   if (message_center_bubble())
     message_center_bubble()->bubble()->BubbleViewDestroyed();
 }
 
 void WebNotificationTray::OnMouseEnteredView() {}
 
 void WebNotificationTray::OnMouseExitedView() {}
 
+void WebNotificationTray::RegisterAccelerators(
+    const std::vector<ui::Accelerator>& accelerators,
+    views::TrayBubbleView* tray_bubble_view) {
+  Shell::Get()->accelerator_controller()->Register(accelerators,
+                                                   tray_bubble_view);
+}
+
+void WebNotificationTray::UnregisterAllAccelerators(
+    views::TrayBubbleView* tray_bubble_view) {
+  Shell::Get()->accelerator_controller()->UnregisterAll(tray_bubble_view);
+}
+
 base::string16 WebNotificationTray::GetAccessibleNameForBubble() {
   return GetAccessibleNameForTray();
 }
 
 void WebNotificationTray::HideBubble(const views::TrayBubbleView* bubble_view) {
   HideBubbleWithView(bubble_view);
 }
 
 bool WebNotificationTray::ShowNotifierSettings() {
   if (message_center_bubble()) {
@@ skipping 130 matching lines @@
 
 message_center::MessageCenterBubble*
 WebNotificationTray::GetMessageCenterBubbleForTest() {
   if (!message_center_bubble())
     return nullptr;
   return static_cast<message_center::MessageCenterBubble*>(
       message_center_bubble()->bubble());
 }
 
 }  // namespace ash