Re-implement the screensaver to use WebView instead of ExtensionDialogHost.

ash/shell/window_type_launcher.cc

Index: ash/shell/window_type_launcher.cc
diff --git a/ash/shell/window_type_launcher.cc b/ash/shell/window_type_launcher.cc
index f3abad27a6fe7b610dbd7d4fbb2d20bcb13e5a31..020ec0061e7573a2b0948c3ddc6c040e8b850112 100644
--- a/ash/shell/window_type_launcher.cc
+++ b/ash/shell/window_type_launcher.cc
@@ -4,6 +4,7 @@
 
 #include "ash/shell/window_type_launcher.h"
 
+#include "ash/screensaver/screensaver_view.h"
 #include "ash/shell.h"
 #include "ash/shell_delegate.h"
 #include "ash/shell_window_ids.h"
@@ -11,7 +12,10 @@
 #include "ash/shell/panel_window.h"
 #include "ash/shell/toplevel_window.h"
 #include "ash/wm/shadow_types.h"
+#include "base/bind.h"
+#include "base/time.h"
 #include "base/utf_string_conversions.h"
+#include "content/public/browser/browser_thread.h"
 #include "ui/aura/root_window.h"
 #include "ui/aura/window.h"
 #include "ui/gfx/canvas.h"
@@ -216,7 +220,10 @@ WindowTypeLauncher::WindowTypeLauncher()
               this, ASCIIToUTF16("Open Views Examples Window")))),
       ALLOW_THIS_IN_INITIALIZER_LIST(show_hide_window_button_(
           new views::NativeTextButton(
-              this, ASCIIToUTF16("Show/Hide a Window")))) {
+              this, ASCIIToUTF16("Show/Hide a Window")))),
+      ALLOW_THIS_IN_INITIALIZER_LIST(show_screensaver_(
+          new views::NativeTextButton(
+              this, ASCIIToUTF16("Show the Screensaver [for 5 seconds]")))) {
   views::GridLayout* layout = new views::GridLayout(this);
   layout->SetInsets(5, 5, 5, 5);
   SetLayoutManager(layout);
@@ -239,6 +246,7 @@ WindowTypeLauncher::WindowTypeLauncher()
   AddViewToLayout(layout, transient_button_);
   AddViewToLayout(layout, examples_button_);
   AddViewToLayout(layout, show_hide_window_button_);
+  AddViewToLayout(layout, show_screensaver_);
 #if !defined(OS_MACOSX)
   set_context_menu_controller(this);
 #endif
@@ -305,6 +313,13 @@ void WindowTypeLauncher::ButtonPressed(views::Button* sender,
     NonModalTransient::OpenNonModalTransient(GetWidget()->GetNativeView());
   } else if (sender == show_hide_window_button_) {
     NonModalTransient::ToggleNonModalTransient(GetWidget()->GetNativeView());
+  } else if (sender == show_screensaver_) {
+    ash::ShowScreensaver(GURL("http://www.google.com"));
+    content::BrowserThread::PostDelayedTask(content::BrowserThread::UI,
+                                            FROM_HERE,
+                                            base::Bind(&ash::CloseScreensaver),
+                                            base::TimeDelta::FromSeconds(5));
+
   }
 #if !defined(OS_MACOSX)
   else if (sender == examples_button_) {