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

ui/views/controls/webview/webview.cc

 // Copyright (c) 2012 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 "ui/views/controls/webview/webview.h"
 
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/render_widget_host_view.h"
 #include "ipc/ipc_message.h"
 #include "ui/base/accessibility/accessible_view_state.h"
 #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 {
 
 // static
 const char WebView::kViewClassName[] =
     "ui/views/WebView";
 
 ////////////////////////////////////////////////////////////////////////////////
 // WebView, public:
 
 WebView::WebView(content::BrowserContext* browser_context)
     : wcv_holder_(new NativeViewHost),
       web_contents_(NULL),
       browser_context_(browser_context),
       allow_accelerators_(false) {
   AddChildView(wcv_holder_);
 }
 
 WebView::~WebView() {
 }
 
 content::WebContents* WebView::GetWebContents() {
   CreateWebContentsWithSiteInstance(NULL);
   return web_contents_;
 }
 
 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();
   }
 }
 
 void WebView::SetWebContents(content::WebContents* web_contents) {
   if (web_contents == web_contents_)
     return;
   DetachWebContents();
@@ skipping 157 matching lines @@
                                     content::RenderViewHost* new_host) {
   if (GetFocusManager()->GetFocusedView() == this)
     web_contents_->Focus();
 }
 
 void WebView::WebContentsDestroyed(content::WebContents* web_contents) {
   DCHECK(web_contents == 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