Update Sad Tab help text and link.

views/examples/widget_example.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 "views/examples/widget_example.h"
 
 #include "views/controls/button/text_button.h"
 #include "views/layout/box_layout.h"
+#include "views/layout/center_layout.h"
 #include "views/layout/layout_manager.h"
 #include "views/view.h"
 #include "views/widget/widget.h"
 
-namespace {
-
-// A layout manager that layouts a single child at
-// the center of the host view.
-class CenterLayout : public views::LayoutManager {
- public:
-  CenterLayout() {}
-  virtual ~CenterLayout() {}
-
-  // Overridden from LayoutManager:
-  virtual void Layout(views::View* host) {
-    views::View* child = host->child_at(0);
-    gfx::Size size = child->GetPreferredSize();
-    child->SetBounds((host->width() - size.width()) / 2,
-                     (host->height() - size.height()) / 2,
-                     size.width(), size.height());
-  }
-
-  virtual gfx::Size GetPreferredSize(views::View* host) {
-    return gfx::Size();
-  }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(CenterLayout);
-};
-
-}  // namespace
-
 namespace examples {
 
 WidgetExample::WidgetExample(ExamplesMain* main)
     : ExampleBase(main) {
 }
 
 WidgetExample::~WidgetExample() {
 }
 
 std::wstring WidgetExample::GetExampleTitle() {
@@ skipping 34 matching lines @@
       new views::NativeTextButton(this, L"Native Close");
   native_button->set_tag(CLOSE_WIDGET);
 
   views::View* button_container = new views::View();
   button_container->SetLayoutManager(
       new views::BoxLayout(views::BoxLayout::kHorizontal, 0, 0, 1));
   button_container->AddChildView(close_button);
   button_container->AddChildView(native_button);
 
   views::View* widget_container = new views::View();
-  widget_container->SetLayoutManager(new CenterLayout);
+  widget_container->SetLayoutManager(new views::CenterLayout());
   widget_container->AddChildView(button_container);
 
   widget->SetContentsView(widget_container);
 
   if (!transparent) {
     widget_container->set_background(
         views::Background::CreateStandardPanelBackground());
   }
 
   // Show the widget.
@@ skipping 56 matching lines @@
       CreateChild(sender, true);
       break;
 #endif
     case CLOSE_WIDGET:
       sender->GetWidget()->Close();
       break;
   }
 }
 
 }  // namespace examples