Update to Chromium //base at Chromium commit 3e81715e6d3a4324362635aea46ce1f1a163cca1.

trace_event/trace_event.h

Index: trace_event/trace_event.h
diff --git a/trace_event/trace_event.h b/trace_event/trace_event.h
index 029a35416b88a4f71aa53ba6a9c83ff224064df7..e7aaa7e3cfaafc317b565b61185999dfe04020af 100644
--- a/trace_event/trace_event.h
+++ b/trace_event/trace_event.h
@@ -97,11 +97,12 @@
 //                    const unsigned char* category_group_enabled,
 //                    const char* name,
 //                    unsigned long long id,
-//                    unsigned long long context_id,
 //                    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 int flags)
 #define TRACE_EVENT_API_ADD_TRACE_EVENT \
     base::trace_event::TraceLog::GetInstance()->AddTraceEvent
@@ -118,6 +119,8 @@
 //                    const char** arg_names,
 //                    const unsigned char* arg_types,
 //                    const unsigned long long* arg_values,
+//                    const scoped_refptr<ConvertableToTraceFormat>*
+//                    convertable_values,
 //                    unsigned int flags)
 #define TRACE_EVENT_API_ADD_TRACE_EVENT_WITH_CONTEXT_ID \
   base::trace_event::TraceLog::GetInstance()->AddTraceEventWithContextId
@@ -136,6 +139,8 @@
 //                    const char** arg_names,
 //                    const unsigned char* arg_types,
 //                    const unsigned long long* arg_values,
+//                    const scoped_refptr<ConvertableToTraceFormat>*
+//                    convertable_values,
 //                    unsigned int flags)
 #define TRACE_EVENT_API_ADD_TRACE_EVENT_WITH_THREAD_ID_AND_TIMESTAMP \
     base::trace_event::TraceLog::GetInstance() \