ash: Some code-cleanup around tray-resizing code.

ash/system/user/tray_user.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/user/tray_user.h"
 
 #include "ash/shell.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/tray/tray_constants.h"
 #include "ash/system/tray/tray_item_view.h"
@@ skipping 56 matching lines @@
       SchedulePaint();
     }
   }
 
   // Overridden from views::View.
   virtual gfx::Size GetPreferredSize() OVERRIDE {
     return gfx::Size(image_size_.width() + GetInsets().width(),
                      image_size_.height() + GetInsets().height());
   }
 
-  virtual void VisibilityChanged(views::View* starting_from,
-                                 bool is_visible) OVERRIDE {
-    if (starting_from == this && GetWidget())
-      GetWidget()->SetSize(GetWidget()->GetContentsView()->GetPreferredSize());
-  }
-
   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {
     View::OnPaint(canvas);
     gfx::Rect image_bounds(GetPreferredSize());
     image_bounds = gfx::Rect(size()).Center(image_bounds.size());
     image_bounds.Inset(GetInsets());
     const SkScalar kRadius = SkIntToScalar(corner_radius_);
     SkPath path;
     path.addRoundRect(gfx::RectToSkRect(image_bounds), kRadius, kRadius);
 
     SkPaint paint;
@@ skipping 219 matching lines @@
 }
 
 void TrayUser::OnUserUpdate() {
   avatar_->SetImage(
       ash::Shell::GetInstance()->tray_delegate()->GetUserImage(),
       gfx::Size(kUserIconSize, kUserIconSize));
 }
 
 }  // namespace internal
 }  // namespace ash