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"
@@ skipping 28 matching lines @@
 }
 
 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 100 matching lines @@
 ////////////////////////////////////////////////////////////////////////////////
 // WebView, content::WebContentsDelegate implementation:
 
 void WebView::WebContentsFocused(content::WebContents* web_contents) {
   DCHECK(wc_owner_.get());
   // The WebView is only the delegate of WebContentses it creates itself.
   OnWebContentsFocused(web_contents_);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
+// WebView, protected:
+
+content::WebContents* WebView::CreateWebContents(
+      content::BrowserContext* browser_context,
+      content::SiteInstance* site_instance) {
+  return content::WebContents::Create(browser_context,
+                                      site_instance,
+                                      MSG_ROUTING_NONE,
+                                      NULL,
+                                      NULL);
+}
+
+////////////////////////////////////////////////////////////////////////////////
 // WebView, private:
 
 void WebView::AttachWebContents() {
   // Prevents attachment if the WebView isn't already in a Widget, or it's
   // already attached.
   if (!GetWidget() || !web_contents_ ||
       wcv_holder_->native_view() == web_contents_->GetNativeView()) {
     return;
   }
 
@@ skipping 38 matching lines @@
   if (GetFocusManager()->GetFocusedView() == this)
     web_contents_->Focus();
 }
 
 void WebView::WebContentsDestroyed(content::WebContents* web_contents) {
   DCHECK(web_contents == web_contents_);
   SetWebContents(NULL);
 }
 
 }  // namespace views