Revert of 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 68 matching lines @@
     views::TrayBubbleView::InitParams init_params;
     init_params.delegate = tray;
     init_params.parent_window = anchor_tray->GetBubbleWindowContainer();
     init_params.anchor_view = anchor_tray->GetBubbleAnchor();
     init_params.anchor_alignment = tray->GetAnchorAlignment();
     const int width = message_center::kNotificationWidth +
                       message_center::kMarginBetweenItems * 2;
     init_params.min_width = width;
     init_params.max_width = width;
     init_params.max_height = bubble->max_height();
+    init_params.can_activate = true;
     init_params.bg_color = message_center::kBackgroundDarkColor;
 
     views::TrayBubbleView* bubble_view = new views::TrayBubbleView(init_params);
     bubble_view->set_anchor_view_insets(anchor_tray->GetBubbleAnchorInsets());
     bubble_wrapper_.reset(new TrayBubbleWrapper(tray, bubble_view));
     bubble->InitializeContents(bubble_view);
   }
 
   message_center::MessageBubbleBase* bubble() const { return bubble_.get(); }
 
@@ skipping 342 matching lines @@
 
 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();
 }
 
-bool WebNotificationTray::ShouldEnableExtraKeyboardAccessibility() {
-  return Shell::Get()->accessibility_delegate()->IsSpokenFeedbackEnabled();
-}
-
 void WebNotificationTray::HideBubble(const views::TrayBubbleView* bubble_view) {
   HideBubbleWithView(bubble_view);
 }
 
 bool WebNotificationTray::ShowNotifierSettings() {
   if (message_center_bubble()) {
     static_cast<message_center::MessageCenterBubble*>(
         message_center_bubble()->bubble())
         ->SetSettingsVisible();
     return true;
@@ skipping 126 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