Add a trace-event for each runtime-stats timer

src/tracing/trace-event.h

Index: src/tracing/trace-event.h
diff --git a/src/tracing/trace-event.h b/src/tracing/trace-event.h
index 2b3bf9bf92cca8fc5524ee1e644057d43795a0f1..9c3977e50527bc4e2665a796f3c6e51ba21258cc 100644
--- a/src/tracing/trace-event.h
+++ b/src/tracing/trace-event.h
@@ -292,6 +292,8 @@ const int kZeroNumArgs = 0;
 const decltype(nullptr) kGlobalScope = nullptr;
 const uint64_t kNoId = 0;
 
+extern int kRuntimeCallsTracingEnabled;
+
 class TraceEventHelper {
  public:
   static v8::Platform* GetCurrentPlatform();
@@ -594,4 +596,25 @@ class TraceEventSamplingStateScope {
 }  // namespace internal
 }  // namespace v8
 
+// V8 Specific macros
+#define TRACE_IS_RUNTIME_CALLS_TRACING_ENABLED() \
+  v8::internal::tracing::kRuntimeCallsTracingEnabled == 1
+
+#define TRACE_CHECK_AND_SET_RUNTIME_CALLS_TRACING()                           \
+  do {                                                                        \
+    INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(                                   \
+        TRACE_DISABLED_BY_DEFAULT("v8.runtime"));                             \
+    v8::internal::tracing::kRuntimeCallsTracingEnabled =                      \
+        INTERNAL_TRACE_EVENT_CATEGORY_GROUP_ENABLED_FOR_RECORDING_MODE() ? 1  \
+                                                                         : 0; \
+  } while (0)
+
+#define TRACE_RUNTIME_CALL(name)                                               \
+  do {                                                                         \
+    if (V8_UNLIKELY(TRACE_IS_RUNTIME_CALLS_TRACING_ENABLED())) {               \
+      INTERNAL_TRACE_EVENT_ADD_SCOPED(TRACE_DISABLED_BY_DEFAULT("v8.runtime"), \
+                                      name);                                   \
+    }                                                                          \
+  } while (0)
+
 #endif  // SRC_TRACING_TRACE_EVENT_H_