[tracing] Avoid Gcc compilation fail by declaring AddTraceEvent function in Class derived from Plat…

test/cctest/test-trace-event.cc

Index: test/cctest/test-trace-event.cc
diff --git a/test/cctest/test-trace-event.cc b/test/cctest/test-trace-event.cc
index cc879df04ba3080f3e583f9e204937e9ef9a5d2e..88f295f30126f69710ae8383be289cd61251c0f0 100644
--- a/test/cctest/test-trace-event.cc
+++ b/test/cctest/test-trace-event.cc
@@ -71,6 +71,7 @@ class MockTracingPlatform : public v8::Platform {
 
   void PerformDelayedTask() {}
 
+  using Platform::AddTraceEvent;
   uint64_t AddTraceEvent(
       char phase, const uint8_t* category_enabled_flag, const char* name,
       const char* scope, uint64_t id, uint64_t bind_id, int num_args,