1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4  * License, v. 2.0. If a copy of the MPL was not distributed with this
5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6 #ifndef mozilla_gfx_config_gfxVarReceiver_h
7 #define mozilla_gfx_config_gfxVarReceiver_h
8 
9 namespace mozilla {
10 namespace gfx {
11 
12 class GfxVarUpdate;
13 
14 // This allows downstream processes (such as PContent, PGPU) to listen for
15 // updates on gfxVarReceiver.
16 class gfxVarReceiver {
17  public:
18   virtual void OnVarChanged(const GfxVarUpdate& aVar) = 0;
19 };
20 
21 }  // namespace gfx
22 }  // namespace mozilla
23 
24 #endif  // mozilla_gfx_config_gfxVarReceiver_h
25