Track plugin input event latency

ppapi/thunk/ppb_input_event_private_thunk.cc

Index: ppapi/thunk/ppb_input_event_private_thunk.cc
diff --git a/ppapi/thunk/ppb_input_event_private_thunk.cc b/ppapi/thunk/ppb_input_event_private_thunk.cc
new file mode 100644
index 0000000000000000000000000000000000000000..26ca0f988745f185201365372699ce84071111bc
--- /dev/null
+++ b/ppapi/thunk/ppb_input_event_private_thunk.cc
@@ -0,0 +1,42 @@
+// Copyright (c) 2014 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 "ppapi/c/pp_errors.h"
+#include "ppapi/c/private/ppb_input_event_private.h"
+#include "ppapi/thunk/enter.h"
+#include "ppapi/thunk/ppb_input_event_api.h"
+#include "ppapi/thunk/thunk.h"
+
+namespace ppapi {
+namespace thunk {
+
+namespace {
+
+PP_Bool TraceInputLatency(PP_Resource event, PP_Bool has_damage) {
+  EnterResource<PPB_InputEvent_API> enter(event, true);
+  if (enter.failed())
+    return PP_FALSE;
+  return enter.object()->TraceInputLatency(has_damage);
+}
+
+void StartTrackingLatency(PP_Instance instance) {
+  EnterInstance enter(instance);
+  if (enter.failed())
+    return;
+  enter.functions()->StartTrackingLatency(instance);
+}
+
+const PPB_InputEvent_Private_0_1 g_ppb_input_event_private_thunk_0_1 = {
+  &TraceInputLatency,
+  &StartTrackingLatency
+};
+
+}  // namespace
+
+const PPB_InputEvent_Private_0_1* GetPPB_InputEvent_Private_0_1_Thunk() {
+  return &g_ppb_input_event_private_thunk_0_1;
+}
+
+}  // namespace thunk
+}  // namespace ppapi