Rewrite scoped_ptr<T>(NULL) to use the default ctor in chrome/.

chrome/browser/ui/views/notifications/balloon_view_views.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 "chrome/browser/ui/views/notifications/balloon_view_views.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 76 matching lines @@
 // static
 int BalloonView::GetHorizontalMargin() {
   return kLeftMargin + kRightMargin + kLeftShadowWidth + kRightShadowWidth;
 }
 
 BalloonViewImpl::BalloonViewImpl(BalloonCollection* collection)
     : balloon_(NULL),
       collection_(collection),
       frame_container_(NULL),
       html_container_(NULL),
-      html_contents_(NULL),
       close_button_(NULL),
-      animation_(NULL),
-      options_menu_model_(NULL),
       options_menu_button_(NULL),
       enable_web_ui_(false),
       closed_by_user_(false) {
   // We're owned by Balloon and don't want to be deleted by our parent View.
   set_owned_by_client();
 
   set_border(new views::BubbleBorder(views::BubbleBorder::FLOAT,
       views::BubbleBorder::NO_SHADOW, SK_ColorWHITE));
 }
 
@@ skipping 414 matching lines @@
     return;
   }
 
   // If the renderer process attached to this balloon is disconnected
   // (e.g., because of a crash), we want to close the balloon.
   notification_registrar_.Remove(
       this, chrome::NOTIFICATION_NOTIFY_BALLOON_DISCONNECTED,
       content::Source<Balloon>(balloon_));
   Close(false);
 }