Change over IgnoreReturn to IgnoreResult. remove IgnoreReturn.

chrome/browser/external_tab_container_win.cc

 // Copyright (c) 2011 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/external_tab_container_win.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 543 matching lines @@
 }
 
 bool ExternalTabContainer::CanDownload(WebContents* source, int request_id) {
   if (load_requests_via_automation_) {
     if (automation_) {
       // In case the host needs to show UI that needs to take the focus.
       ::AllowSetForegroundWindow(ASFW_ANY);
 
       BrowserThread::PostTask(
           BrowserThread::IO, FROM_HERE,
-          base::IgnoreReturn<bool>(base::Bind(
-              &AutomationResourceMessageFilter::SendDownloadRequestToHost,
-              automation_resource_message_filter_.get(), 0, tab_handle_,
-              request_id)));
+          base::Bind(
+             base::IgnoreResult(
+                 &AutomationResourceMessageFilter::SendDownloadRequestToHost),
+             automation_resource_message_filter_.get(), 0, tab_handle_,
+             request_id));
     }
   } else {
     DLOG(WARNING) << "Downloads are only supported with host browser network "
                      "stack enabled.";
   }
 
   // Never allow downloads.
   return false;
 }
 
@@ skipping 619 matching lines @@
   if (params.disposition == CURRENT_TAB) {
     DCHECK(route_all_top_level_navigations_);
     forward_params.disposition = NEW_FOREGROUND_TAB;
   }
   WebContents* new_contents =
       ExternalTabContainer::OpenURLFromTab(source, forward_params);
   // support only one navigation for a dummy tab before it is killed.
   ::DestroyWindow(GetNativeView());
   return new_contents;
 }