permissionrequest API for guest Download.

chrome/browser/prerender/prerender_contents.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 "chrome/browser/prerender/prerender_contents.h"
 
 #include <algorithm>
 #include <functional>
 #include <utility>
 
@@ skipping 60 matching lines @@
     // that requires the browser to perform the transition instead of WebKit.
     // Examples include prerendering a site that redirects to an app URL,
     // or if --enable-strict-site-isolation is specified and the prerendered
     // frame redirects to a different origin.
     // TODO(cbentzel): Consider supporting this if it is a common case during
     // prerenders.
     prerender_contents_->Destroy(FINAL_STATUS_OPEN_URL);
     return NULL;
   }
 
-  virtual bool CanDownload(RenderViewHost* render_view_host,
-                           int request_id,
-                           const std::string& request_method) OVERRIDE {
+  virtual void CanDownload(
+      RenderViewHost* render_view_host,
+      int request_id,
+      const std::string& request_method,
+      const base::Callback<void(bool)>& callback) OVERRIDE {
     prerender_contents_->Destroy(FINAL_STATUS_DOWNLOAD);
     // Cancel the download.
-    return false;
+    callback.Run(false);
   }
 
   virtual bool ShouldCreateWebContents(
       WebContents* web_contents,
       int route_id,
       WindowContainerType window_container_type,
       const string16& frame_name,
       const GURL& target_url) OVERRIDE {
     // Since we don't want to permit child windows that would have a
     // window.opener property, terminate prerendering.
@@ skipping 602 matching lines @@
 
 bool PrerenderContents::IsCrossSiteNavigationPending() const {
   if (!prerender_contents_)
     return false;
   return (prerender_contents_->GetSiteInstance() !=
           prerender_contents_->GetPendingSiteInstance());
 }
 
 
 }  // namespace prerender