Track plugin input event latency

mojo/examples/pepper_container_app/plugin_instance.cc

 // Copyright 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 "mojo/examples/pepper_container_app/plugin_instance.h"
 
 #include "base/logging.h"
 #include "mojo/examples/pepper_container_app/graphics_3d_resource.h"
 #include "mojo/examples/pepper_container_app/mojo_ppapi_globals.h"
 #include "ppapi/c/pp_errors.h"
@@ skipping 200 matching lines @@
                                                     uint32_t event_classes) {
   NOTIMPLEMENTED();
   return PP_ERROR_FAILED;
 }
 
 void PluginInstance::ClearInputEventRequest(PP_Instance instance,
                                             uint32_t event_classes) {
   NOTIMPLEMENTED();
 }
 
+void PluginInstance::StartTrackingLatency(PP_Instance instance) {
+  NOTIMPLEMENTED();
+}
+
 void PluginInstance::PostMessage(PP_Instance instance, PP_Var message) {
   NOTIMPLEMENTED();
 }
 
 PP_Bool PluginInstance::SetCursor(PP_Instance instance,
                                   PP_MouseCursor_Type type,
                                   PP_Resource image,
                                   const PP_Point* hot_spot) {
   NOTIMPLEMENTED();
   return PP_FALSE;
@@ skipping 144 matching lines @@
 }
 
 PP_Var PluginInstance::GetPluginReferrerURL(PP_Instance instance,
                                             PP_URLComponents_Dev* components) {
   NOTIMPLEMENTED();
   return PP_MakeUndefined();
 }
 
 }  // namespace examples
 }  // namespace mojo