permissions: handle request ids for permissions in permission manager

content/shell/browser/layout_test/layout_test_permission_manager.cc

 // Copyright 2015 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 "content/shell/browser/layout_test/layout_test_permission_manager.h"
 
 #include <list>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 43 matching lines @@
   return hash;
 }
 
 LayoutTestPermissionManager::LayoutTestPermissionManager()
     : PermissionManager() {
 }
 
 LayoutTestPermissionManager::~LayoutTestPermissionManager() {
 }
 
-void LayoutTestPermissionManager::RequestPermission(
+int LayoutTestPermissionManager::RequestPermission(
     PermissionType permission,
     RenderFrameHost* render_frame_host,
-    int request_id,
     const GURL& requesting_origin,
     bool user_gesture,
     const base::Callback<void(PermissionStatus)>& callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
   callback.Run(GetPermissionStatus(
       permission, requesting_origin,
       WebContents::FromRenderFrameHost(render_frame_host)
           ->GetLastCommittedURL().GetOrigin()));
+  return kNoPendingOperation;
 }
 
 void LayoutTestPermissionManager::CancelPermissionRequest(
     PermissionType permission,
     RenderFrameHost* render_frame_host,
     int request_id,
     const GURL& requesting_origin) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 }
 
@@ skipping 109 matching lines @@
     // Add the callback to |callbacks| which will be run after the loop to
     // prevent re-entrance issues.
     callbacks.push_back(base::Bind(subscription->callback, status));
   }
 
   for (const auto& callback : callbacks)
     callback.Run();
 }
 
 }  // namespace content