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

ash/wm/frame_painter.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/wm/frame_painter.h"
 
 #include <vector>
 
 #include "ash/ash_constants.h"
 #include "ash/root_window_controller.h"
@@ skipping 212 matching lines @@
       top_edge_(NULL),
       top_right_corner_(NULL),
       header_left_edge_(NULL),
       header_right_edge_(NULL),
       previous_theme_frame_id_(0),
       previous_theme_frame_overlay_id_(0),
       previous_opacity_(0),
       crossfade_theme_frame_id_(0),
       crossfade_theme_frame_overlay_id_(0),
       crossfade_opacity_(0),
-      crossfade_animation_(NULL),
-      size_button_behavior_(SIZE_BUTTON_MAXIMIZES) {
-}
+      size_button_behavior_(SIZE_BUTTON_MAXIMIZES) {}
 
 FramePainter::~FramePainter() {
   // Sometimes we are destroyed before the window closes, so ensure we clean up.
   if (window_) {
     window_->RemoveObserver(this);
     aura::RootWindow* root = window_->GetRootWindow();
     if (root)
       root->RemoveObserver(this);
   }
 }
@@ skipping 701 matching lines @@
   int title_y =
       (view->GetBoundsForClientView().y() - title_font.GetHeight()) / 2;
   return gfx::Rect(
       title_x,
       std::max(0, title_y),
       std::max(0, size_button_->x() - kTitleLogoSpacing - title_x),
       title_font.GetHeight());
 }
 
 }  // namespace ash