1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
7 interface ViewportParameterListener {
8 // These parameters describe the refresh rate of the viewport. The viewport
9 // refreshes every |interval| time ticks. The phase of the refresh is
10 // indicated by |timebase|, which is synchronized with MojoGetTimeTicksNow.
11 OnVSyncParametersUpdated(int64 timebase, int64 interval);