Use HitTestAggregator in GpuRootCompositorFrameSink

components/viz/common/switches.cc

Index: components/viz/common/switches.cc
diff --git a/components/viz/common/switches.cc b/components/viz/common/switches.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a6cf24ff4a7c96170145f79ad851832139a769b0
--- /dev/null
+++ b/components/viz/common/switches.cc
@@ -0,0 +1,16 @@
+// Copyright (c) 2017 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 "components/viz/common/switches.h"
+
+#include "base/command_line.h"
+
+namespace viz {
+namespace switches {
+
+// Use Viz HitTest Component for Event Targetting
+const char kUseVizHitTest[] = "use-viz-hit-test";
+
+}  // namespace switches
+}  // namespace viz