Add support for TraceEvent before the native library is loaded.

base/trace_event/trace_event_impl.h

Index: base/trace_event/trace_event_impl.h
diff --git a/base/trace_event/trace_event_impl.h b/base/trace_event/trace_event_impl.h
index 742f6b6fe61d73aaccd80873104adfb7dd4c57ca..1393c72a150260119c50e016ed717590535898f7 100644
--- a/base/trace_event/trace_event_impl.h
+++ b/base/trace_event/trace_event_impl.h
@@ -578,6 +578,20 @@ class BASE_EXPORT TraceLog {
       const unsigned long long* arg_values,
       const scoped_refptr<ConvertableToTraceFormat>* convertable_values,
       unsigned char flags);
+  TraceEventHandle AddTraceEventWithThreadIdAndTimestamp(
+      char phase,
+      const unsigned char* category_group_enabled,
+      const char* name,
+      unsigned long long id,
+      int thread_id,
+      const TimeTicks& timestamp,
+      const TimeTicks& thread_time,
+      int num_args,
+      const char** arg_names,
+      const unsigned char* arg_types,
+      const unsigned long long* arg_values,
+      const scoped_refptr<ConvertableToTraceFormat>* convertable_values,
+      unsigned char flags);
   static void AddTraceEventEtw(char phase,
                                const char* category_group,
                                const void* id,
@@ -699,6 +713,21 @@ class BASE_EXPORT TraceLog {
                                     const TimeTicks& timestamp,
                                     TraceEvent* trace_event);
 
+  TraceEventHandle AddTraceEventInternal(
+      char phase,
+      const unsigned char* category_group_enabled,
+      const char* name,
+      unsigned long long id,
+      int thread_id,
+      const TimeTicks& timestamp,
+      const TimeTicks& thread_time,
+      int num_args,
+      const char** arg_names,
+      const unsigned char* arg_types,
+      const unsigned long long* arg_values,
+      const scoped_refptr<ConvertableToTraceFormat>* convertable_values,
+      unsigned char flags);
+
   TraceEvent* AddEventToThreadSharedChunkWhileLocked(TraceEventHandle* handle,
                                                      bool check_buffer_is_full);
   void CheckIfBufferIsFullWhileLocked();