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

ui/views/controls/webview/webview.cc

Index: ui/views/controls/webview/webview.cc
diff --git a/ui/views/controls/webview/webview.cc b/ui/views/controls/webview/webview.cc
index eb7846ba6c99d39d147be11fb74e3b1bcd6e3540..b6825d15159fd13b09e8efd6a2787289baede75a 100644
--- a/ui/views/controls/webview/webview.cc
+++ b/ui/views/controls/webview/webview.cc
@@ -17,6 +17,7 @@
 #include "ui/base/accessibility/accessibility_types.h"
 #include "ui/views/controls/native/native_view_host.h"
 #include "ui/views/focus/focus_manager.h"
+#include "ui/views/views_delegate.h"
 
 namespace views {
 
@@ -46,11 +47,7 @@ content::WebContents* WebView::GetWebContents() {
 void WebView::CreateWebContentsWithSiteInstance(
     content::SiteInstance* site_instance) {
   if (!web_contents_) {
-    wc_owner_.reset(content::WebContents::Create(browser_context_,
-                                                 site_instance,
-                                                 MSG_ROUTING_NONE,
-                                                 NULL,
-                                                 NULL));
+    wc_owner_.reset(CreateWebContents(browser_context_, site_instance));
     web_contents_ = wc_owner_.get();
     web_contents_->SetDelegate(this);
     AttachWebContents();
@@ -228,4 +225,24 @@ void WebView::WebContentsDestroyed(content::WebContents* web_contents) {
   SetWebContents(NULL);
 }
 
+content::WebContents* WebView::CreateWebContents(
+      content::BrowserContext* browser_context,
+      content::SiteInstance* site_instance) {
+  content::WebContents* contents = NULL;
+  if (ViewsDelegate::views_delegate) {
+    contents = ViewsDelegate::views_delegate->CreateWebContents(
+        browser_context, site_instance);
+  }
+
+  if (!contents) {
+    return content::WebContents::Create(browser_context,
+                                        site_instance,
+                                        MSG_ROUTING_NONE,
+                                        NULL,
+                                        NULL);
+  }
+
+  return contents;
+}
+
 }  // namespace views