Introduce centered view and bottom view for home card.

athena/home/minimized_home.cc

 // Copyright 2014 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 "athena/home/minimized_home.h"
 
 #include "ui/views/background.h"
 #include "ui/views/layout/box_layout.h"
 #include "ui/views/view.h"
 #include "ui/views/widget/widget.h"
@@ skipping 75 matching lines @@
   athena::MinimizedHomeDragDelegate* delegate_;
   SkColor color_;
 
   DISALLOW_COPY_AND_ASSIGN(MinimizedHomeView);
 };
 
 }  // namespace
 
 namespace athena {
 
-views::Widget* CreateMinimizedHome(aura::Window* container,
-                                   MinimizedHomeDragDelegate* delegate) {
-  views::Widget* widget = new views::Widget;
-  views::Widget::InitParams params(
-      views::Widget::InitParams::TYPE_WINDOW_FRAMELESS);
-  params.parent = container;
-  params.delegate = NULL;
-  widget->Init(params);
-
+views::View* CreateMinimizedHome(MinimizedHomeDragDelegate* delegate) {
   views::View* content_view = new views::View;
-  widget->SetContentsView(content_view);
+  content_view->set_background(
+      views::Background::CreateSolidBackground(SK_ColorBLACK));
   views::BoxLayout* layout =
       new views::BoxLayout(views::BoxLayout::kHorizontal, 0, 2, 0);
   layout->set_main_axis_alignment(views::BoxLayout::MAIN_AXIS_ALIGNMENT_CENTER);
   content_view->SetLayoutManager(layout);
 
   views::View* view = new MinimizedHomeView(delegate);
   content_view->AddChildView(view);
-  return widget;
+  return content_view;
 }
 
 }  // namespace athena