Implement PermissionService::GetNextPermissionChange.

android_webview/browser/aw_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 "android_webview/browser/aw_permission_manager.h"
 
 #include "android_webview/browser/aw_browser_permission_request_delegate.h"
 #include "base/callback.h"
 #include "content/public/browser/permission_type.h"
 #include "content/public/browser/render_process_host.h"
@@ skipping 106 matching lines @@
     const GURL& embedding_origin) {
   return content::PERMISSION_STATUS_DENIED;
 }
 
 void AwPermissionManager::RegisterPermissionUsage(
     content::PermissionType permission,
     const GURL& requesting_origin,
     const GURL& embedding_origin) {
 }
 
+int AwPermissionManager::SubscribePermissionStatusChange(
+    content::PermissionType permission,
+    const GURL& requesting_origin,
+    const GURL& embedding_origin,
+    const base::Callback<void(content::PermissionStatus)>& callback) {
+  return -1;
+}
+
+void AwPermissionManager::UnsubscribePermissionStatusChange(
+    int subscription_id) {
+}
+
 }  // namespace android_webview