Track plugin input event latency

ppapi/tests/test_input_event.h

Index: ppapi/tests/test_input_event.h
diff --git a/ppapi/tests/test_input_event.h b/ppapi/tests/test_input_event.h
index 88e7388c340a820af41cb26bcfa2b2413f54e3ed..1e5aeea160cf3e26613d9091b54fb2711d2d632a 100644
--- a/ppapi/tests/test_input_event.h
+++ b/ppapi/tests/test_input_event.h
@@ -12,6 +12,7 @@
 #include "ppapi/c/private/ppb_testing_private.h"
 #include "ppapi/cpp/input_event.h"
 #include "ppapi/cpp/point.h"
+#include "ppapi/cpp/private/input_event_private.h"
 #include "ppapi/cpp/rect.h"
 #include "ppapi/tests/test_case.h"
 #include "ppapi/tests/test_utils.h"
@@ -44,12 +45,14 @@ class TestInputEvent : public TestCase {
   bool AreEquivalentEvents(PP_Resource first, PP_Resource second);
 
   std::string TestEvents();
+  std::string TestEventsLatencyTracking();
   std::string TestAcceptTouchEvent_1();
   std::string TestAcceptTouchEvent_2();
   std::string TestAcceptTouchEvent_3();
   std::string TestAcceptTouchEvent_4();
 
   const PPB_InputEvent* input_event_interface_;
+  const PPB_InputEvent_Private* input_event_private_interface_;
   const PPB_MouseInputEvent* mouse_input_event_interface_;
   const PPB_WheelInputEvent* wheel_input_event_interface_;
   const PPB_KeyboardInputEvent* keyboard_input_event_interface_;
@@ -61,6 +64,8 @@ class TestInputEvent : public TestCase {
   pp::InputEvent expected_input_event_;
   bool received_expected_event_;
   bool received_finish_message_;
+  bool enable_latency_tracking_;
+  bool last_latency_tracking_successful_;
 };
 
 #endif  // PPAPI_TESTS_TEST_INPUT_EVENT_H_