permissionrequest API for guest Download.

chrome/browser/ui/search/instant_loader.cc

 // Copyright 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/ui/search/instant_loader.h"
 
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
 #include "chrome/browser/extensions/api/web_navigation/web_navigation_api.h"
 #include "chrome/browser/favicon/favicon_tab_helper.h"
 #include "chrome/browser/history/history_tab_helper.h"
@@ skipping 177 matching lines @@
 }
 
 void InstantLoader::LostCapture() {
   delegate_->OnMouseUp();
 }
 
 void InstantLoader::WebContentsFocused(content::WebContents* /* contents */) {
   delegate_->OnFocus();
 }
 
-bool InstantLoader::CanDownload(content::RenderViewHost* /* render_view_host */,
+void InstantLoader::CanDownload(content::RenderViewHost* /* render_view_host */,
                                 int /* request_id */,
-                                const std::string& /* request_method */) {
+                                const std::string& /* request_method */,
+                                const base::Callback<void(bool)>& callback) {
   // Downloads are disabled.
-  return false;
+  callback.Run(false);
 }
 
 void InstantLoader::HandleMouseDown() {
   delegate_->OnMouseDown();
 }
 
 void InstantLoader::HandleMouseUp() {
   delegate_->OnMouseUp();
 }
 
@@ skipping 14 matching lines @@
 
 bool InstantLoader::OnGoToEntryOffset(int /* offset */) {
   return false;
 }
 
 content::WebContents* InstantLoader::OpenURLFromTab(
     content::WebContents* source,
     const content::OpenURLParams& params) {
   return delegate_->OpenURLFromTab(source, params);
 }