Fixing various problems with the new shelf layout in conjunction with the blue tray background on b…

ash/system/web_notification/web_notification_tray.cc

Index: ash/system/web_notification/web_notification_tray.cc
diff --git a/ash/system/web_notification/web_notification_tray.cc b/ash/system/web_notification/web_notification_tray.cc
index 5527133c4259906ac78fb979b4b4d0e0d0cb4a1c..d592afe8dd9d81442ee8460ab3e456b7519217f8 100644
--- a/ash/system/web_notification/web_notification_tray.cc
+++ b/ash/system/web_notification/web_notification_tray.cc
@@ -376,6 +376,7 @@ bool WebNotificationTray::ShowMessageCenterInternal(bool show_settings) {
   status_area_widget()->SetHideSystemNotifications(true);
   GetShelfLayoutManager()->UpdateAutoHideState();
   button_->SetBubbleVisible(true);
+  SetDrawBackgroundAsActive(true);
   return true;
 }
 
@@ -386,6 +387,7 @@ bool WebNotificationTray::ShowMessageCenter() {
 void WebNotificationTray::HideMessageCenter() {
   if (!message_center_bubble())
     return;
+  SetDrawBackgroundAsActive(false);
   message_center_bubble_.reset();
   should_block_shelf_auto_hide_ = false;
   show_message_center_on_unlock_ = false;
@@ -568,10 +570,6 @@ void WebNotificationTray::ExecuteCommand(int command_id, int event_flags) {
   message_center()->EnterQuietModeWithExpire(expires_in);
 }
 
-bool WebNotificationTray::IsPressed() {
-  return IsMessageCenterBubbleVisible();
-}
-
 void WebNotificationTray::ButtonPressed(views::Button* sender,
                                         const ui::Event& event) {
   DCHECK_EQ(button_, sender);