android: Add thread time to early TraceEvent, make timings more precise.

base/trace_event/trace_log.h

Index: base/trace_event/trace_log.h
diff --git a/base/trace_event/trace_log.h b/base/trace_event/trace_log.h
index b5ebc4f6e528ee0454285522d43fb6bedef13c21..bc2225d71bf00147881e634d370fb95aeed08258 100644
--- a/base/trace_event/trace_log.h
+++ b/base/trace_event/trace_log.h
@@ -269,6 +269,13 @@ class BASE_EXPORT TraceLog : public MemoryDumpProvider {
                                 const char* name,
                                 TraceEventHandle handle);
 
+  void UpdateTraceEventDurationExplicit(
+      const unsigned char* category_group_enabled,
+      const char* name,
+      TraceEventHandle handle,
+      const TimeTicks& now,
+      const ThreadTicks& thread_now);
+
   void EndFilteredEvent(const unsigned char* category_group_enabled,
                         const char* name,
                         TraceEventHandle handle);