Add TraySms for SMS messages.

ash/system/tray/system_tray_bubble.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/tray/system_tray_bubble.h"
 
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/system/tray/system_tray_delegate.h"
@@ skipping 355 matching lines @@
 void SystemTrayBubble::UpdateView(
     const std::vector<ash::SystemTrayItem*>& items,
     BubbleType bubble_type) {
   DestroyItemViews();
   bubble_view_->RemoveAllChildViews(true);
 
   items_ = items;
   bubble_type_ = bubble_type;
   CreateItemViews(Shell::GetInstance()->tray_delegate()->GetUserLoginStatus());
   bubble_widget_->GetContentsView()->Layout();
+  // Make sure that the bubble is large enough for the default view.
+  if (bubble_type_ == BUBBLE_TYPE_DEFAULT)
+    bubble_view_->SizeToContents();
 }
 
 void SystemTrayBubble::InitView(const InitParams& init_params) {
   DCHECK(bubble_view_ == NULL);
   anchor_type_ = init_params.anchor_type;
   bubble_view_ = new SystemTrayBubbleView(
       init_params.anchor, this, init_params.can_activate);
   if (bubble_type_ == BUBBLE_TYPE_NOTIFICATION)
     bubble_view_->set_close_on_deactivate(false);
 
@@ skipping 117 matching lines @@
 }
 
 void SystemTrayBubble::OnWidgetClosing(views::Widget* widget) {
   CHECK_EQ(bubble_widget_, widget);
   bubble_widget_ = NULL;
   tray_->RemoveBubble(this);
 }
 
 }  // namespace internal
 }  // namespace ash