permissionrequest API for guest Download.

chrome/browser/android/chrome_web_contents_delegate_android.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/android/chrome_web_contents_delegate_android.h"
 
 #include "base/android/jni_android.h"
 #include "base/metrics/histogram.h"
 #include "base/string_util.h"
 #include "chrome/browser/file_select_helper.h"
@@ skipping 210 matching lines @@
       env,
       obj.obj(),
       details_object.obj());
 }
 
 content::JavaScriptDialogManager*
 ChromeWebContentsDelegateAndroid::GetJavaScriptDialogManager() {
   return GetJavaScriptDialogManagerInstance();
 }
 
-bool ChromeWebContentsDelegateAndroid::CanDownload(
+void ChromeWebContentsDelegateAndroid::CanDownload(
     content::RenderViewHost* source,
     int request_id,
-    const std::string& request_method) {
+    const std::string& request_method,
+    const base::Callback<void(bool)>& callback) {
   if (request_method == net::HttpRequestHeaders::kGetMethod) {
     content::DownloadControllerAndroid::Get()->CreateGETDownload(
         source, request_id);
-    return false;
+    callback.Run(false);
   }
   // DownloadControllerAndroid::OnPostDownloadStarted() is called for the
   // started download by the default DownloadUIController::Delegate
   // implementation.
-  return true;
+  callback.Run(true);
 }
 
 void ChromeWebContentsDelegateAndroid::DidNavigateToPendingEntry(
     content::WebContents* source) {
   navigation_start_time_ = base::TimeTicks::Now();
 }
 
 void ChromeWebContentsDelegateAndroid::DidNavigateMainFramePostCommit(
     content::WebContents* source) {
   if (!IsActiveNavigationGoogleSearch(source))
@@ skipping 24 matching lines @@
         web_contents, url, plugin_path, callback);
     return true;
 #else
     return false;
 #endif
 }
 
 
 }  // namespace android
 }  // namespace chrome