Implement compositor thread VSync aligned event queue

ui/events/blink/blink_features.cc

Index: ui/events/blink/blink_features.cc
diff --git a/ui/events/blink/blink_features.cc b/ui/events/blink/blink_features.cc
new file mode 100644
index 0000000000000000000000000000000000000000..9c06c8658c635d3363db31fefd4740b23794b38c
--- /dev/null
+++ b/ui/events/blink/blink_features.cc
@@ -0,0 +1,14 @@
+// Copyright 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 "ui/events/blink/blink_features.h"
+
+namespace features {
+
+// Enables VSync aligned input for GestureScroll/Pinch on compositor thread.
+// Tracking: https://crbug.com/625689
+const base::Feature kVsyncAlignedInputEvents{"VsyncAlignedInput",
+                                             base::FEATURE_DISABLED_BY_DEFAULT};
+
+}