GpuVSyncProvider with unit test

gpu/ipc/service/gpu_vsync_provider_posix.cc

Index: gpu/ipc/service/gpu_vsync_provider_posix.cc
diff --git a/gpu/ipc/service/gpu_vsync_provider_posix.cc b/gpu/ipc/service/gpu_vsync_provider_posix.cc
new file mode 100644
index 0000000000000000000000000000000000000000..00039f65023696e22389a0623768961f920387ed
--- /dev/null
+++ b/gpu/ipc/service/gpu_vsync_provider_posix.cc
@@ -0,0 +1,22 @@
+// Copyright (c) 2016 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 "gpu/ipc/service/gpu_vsync_provider.h"
+
+namespace gpu {
+
+/* static */
+std::unique_ptr<GpuVSyncProvider> GpuVSyncProvider::Create(
+    const VSyncCallback& callback,
+    SurfaceHandle surface_handle) {
+  return std::unique_ptr<GpuVSyncProvider>();
+}
+
+GpuVSyncProvider::~GpuVSyncProvider() = default;
+
+void GpuVSyncProvider::EnableVSync(bool enabled) {
+  NOTREACHED();
+}
+
+}  // namespace gpu