Track plugin input event latency

ppapi/cpp/private/instance_private.cc

 // Copyright (c) 2012 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/cpp/private/instance_private.h"
 
+#include "ppapi/c/private/ppb_input_event_private.h"
 #include "ppapi/c/private/ppb_instance_private.h"
 #include "ppapi/c/private/ppp_instance_private.h"
 #include "ppapi/cpp/module_impl.h"
 #include "ppapi/cpp/private/var_private.h"
 
 namespace pp {
 
 namespace {
 
 template <> const char* interface_name<PPB_Instance_Private>() {
   return PPB_INSTANCE_PRIVATE_INTERFACE;
 }
 
+template <> const char* interface_name<PPB_InputEvent_Private>() {
+  return PPB_INPUTEVENT_PRIVATE_INTERFACE;
+}
+
 PP_Var GetInstanceObject(PP_Instance pp_instance) {
   Module* module_singleton = Module::Get();
   if (!module_singleton)
     return Var().Detach();
   InstancePrivate* instance_private = static_cast<InstancePrivate*>(
       module_singleton->InstanceForPPInstance(pp_instance));
   if (!instance_private)
     return Var().Detach();
   return instance_private->GetInstanceObject().Detach();
 }
@@ skipping 35 matching lines @@
 VarPrivate InstancePrivate::ExecuteScript(const Var& script, Var* exception) {
   if (!has_interface<PPB_Instance_Private>())
     return VarPrivate();
   return VarPrivate(PASS_REF,
       get_interface<PPB_Instance_Private>()->ExecuteScript(
           pp_instance(),
           script.pp_var(),
           VarPrivate::OutException(exception).get()));
 }
 
+void InstancePrivate::StartTrackingLatency(PP_Instance instance) {
+  if (!has_interface<PPB_InputEvent_Private>())
+    return;
+  return get_interface<PPB_InputEvent_Private>()->StartTrackingLatency(
+      pp_instance());
+}
+
 }  // namespace pp