Adds code for a new Aura shell.

ui/aura_shell/desktop_background_view.cc

Index: ui/aura_shell/desktop_background_view.cc
===================================================================
--- ui/aura_shell/desktop_background_view.cc	(revision 101422)
+++ ui/aura_shell/desktop_background_view.cc	(working copy)
@@ -5,17 +5,18 @@
 #include "ui/aura_shell/desktop_background_view.h"
 
 #include "grit/ui_resources.h"
+#include "ui/aura/desktop.h"
+#include "ui/aura_shell/sample_window.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/canvas.h"
+#include "views/widget/widget.h"
 
 ////////////////////////////////////////////////////////////////////////////////
 // DesktopBackgroundView, public:
 
 DesktopBackgroundView::DesktopBackgroundView() {
-  /*
   wallpaper_ = *ResourceBundle::GetSharedInstance().GetBitmapNamed(
       IDR_AURA_WALLPAPER);
-      */
 }
 
 DesktopBackgroundView::~DesktopBackgroundView() {
@@ -25,9 +26,27 @@
 // DesktopBackgroundView, views::View overrides:
 
 void DesktopBackgroundView::OnPaint(gfx::Canvas* canvas) {
-  //canvas->TileImageInt(wallpaper_, 0, 0, width(), height());
+  canvas->TileImageInt(wallpaper_, 0, 0, width(), height());
 }
 
 void DesktopBackgroundView::OnBoundsChanged(const gfx::Rect& previous_bounds) {
   LOG(WARNING) << "Here";
 }
+
+bool DesktopBackgroundView::OnMousePressed(const views::MouseEvent& event) {
+  SampleWindow::CreateSampleWindow();
+  return true;
+}
+
+views::Widget* CreateDesktopBackground() {
+  views::Widget* desktop_widget = new views::Widget;
+  views::Widget::InitParams params(views::Widget::InitParams::TYPE_CONTROL);
+  params.bounds = gfx::Rect(0, 0, 1024, 768);
+  params.parent = aura::Desktop::GetInstance()->window();
+  DesktopBackgroundView* view = new DesktopBackgroundView;
+  params.delegate = view;
+  desktop_widget->Init(params);
+  desktop_widget->SetContentsView(view);
+  desktop_widget->Show();
+  return desktop_widget;
+}