touchui login: Fix a crash in debug build in the login screen.

chrome/browser/chromeos/login/touch_login_view.cc

 // Copyright (c) 2011 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/chromeos/login/touch_login_view.h"
 
 #include "chrome/browser/chromeos/status/status_area_view.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/renderer_host/render_widget_host_view_views.h"
 #include "chrome/browser/ui/touch/frame/keyboard_container_view.h"
@@ skipping 102 matching lines @@
   bool display_keyboard = (keyboard_showing_ || animation_->is_animating());
   keyboard_->SetVisible(display_keyboard);
   gfx::Rect keyboard_bounds = bounds();
   int keyboard_height = display_keyboard ? keyboard_height_ : 0;
   keyboard_bounds.set_y(keyboard_bounds.height() - keyboard_height);
   keyboard_bounds.set_height(keyboard_height);
   keyboard_->SetBoundsRect(keyboard_bounds);
 }
 
 void TouchLoginView::InitStatusArea() {
-  DCHECK(status_area_ == NULL);
+  if (status_area_)
+    return;
   status_area_ = new StatusAreaView(this);
   status_area_->Init();
   AddChildView(status_area_);
 }
 
 // TouchLoginView private: -----------------------------------------------------
 
 void TouchLoginView::InitVirtualKeyboard() {
   keyboard_ = new KeyboardContainerView(profile_, NULL);
   keyboard_->SetVisible(false);
@@ skipping 89 matching lines @@
 void TouchLoginView::AnimationEnded(const ui::Animation* animation) {
   if (keyboard_showing_) {
     Layout();
   } else {
     // Notify the keyboard that it is hidden now.
     keyboard_->SetVisible(false);
   }
 }
 
 }  // namespace chromeos