1 files changed, 41 insertions, 0 deletions
diff --git a/gfx/ipc/CompositorWidgetVsyncObserver.h b/gfx/ipc/CompositorWidgetVsyncObserver.h
new file mode 100644
index 0000000000..880536c572
--- /dev/null
+++ b/gfx/ipc/CompositorWidgetVsyncObserver.h
@@ -0,0 +1,41 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_gfx_ipc_CompositorWidgetVsyncObserver_h
+#define mozilla_gfx_ipc_CompositorWidgetVsyncObserver_h
+
+#include "mozilla/layers/LayersTypes.h"
+#include "mozilla/VsyncDispatcher.h"
+
+namespace mozilla {
+namespace gfx {
+class VsyncBridgeChild;
+}  // namespace gfx
+
+namespace widget {
+
+class CompositorWidgetVsyncObserver : public VsyncObserver {
+  typedef gfx::VsyncBridgeChild VsyncBridgeChild;
+
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(CompositorWidgetVsyncObserver, override)
+
+ public:
+  CompositorWidgetVsyncObserver(RefPtr<VsyncBridgeChild> aVsyncBridge,
+                                const layers::LayersId& aRootLayerTreeId);
+
+  void NotifyVsync(const VsyncEvent& aVsync) override;
+
+ private:
+  ~CompositorWidgetVsyncObserver() override;
+
+  RefPtr<VsyncBridgeChild> mVsyncBridge;
+  layers::LayersId mRootLayerTreeId;
+};
+
+}  // namespace widget
+}  // namespace mozilla
+
+#endif  // mozilla_gfx_ipc_CompositorWidgetVsyncObserver_h