| Index: base/trace_event/common/trace_event_common.h | 
| diff --git a/base/trace_event/common/trace_event_common.h b/base/trace_event/common/trace_event_common.h | 
| index 76d3039250ed89a96570c79a2d565cf3bd7f2884..bdc450d56824cde94b44c62b0c9eca7d674059e7 100644 | 
| --- a/base/trace_event/common/trace_event_common.h | 
| +++ b/base/trace_event/common/trace_event_common.h | 
| @@ -359,6 +359,12 @@ | 
| TRACE_EVENT_PHASE_MARK, category_group, name, timestamp,            \ | 
| TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val) | 
|  | 
| +#define TRACE_EVENT_MARK_WITH_TIMESTAMP2(                                      \ | 
| +    category_group, name, timestamp, arg1_name, arg1_val, arg2_name, arg2_val) \ | 
| +  INTERNAL_TRACE_EVENT_ADD_WITH_TIMESTAMP(                                     \ | 
| +      TRACE_EVENT_PHASE_MARK, category_group, name, timestamp,                 \ | 
| +      TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val, arg2_name, arg2_val) | 
| + | 
| #define TRACE_EVENT_COPY_MARK(category_group, name)                      \ | 
| INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_MARK, category_group, name, \ | 
| TRACE_EVENT_FLAG_COPY) | 
|  |