| Index: components/tracing/tracing_messages.h | 
| diff --git a/components/tracing/tracing_messages.h b/components/tracing/tracing_messages.h | 
| index 873989d8e2a12589c7f7d316aa942d288c38f416..658972fb7457fbef2d3352f136e991d7ae2f0f88 100644 | 
| --- a/components/tracing/tracing_messages.h | 
| +++ b/components/tracing/tracing_messages.h | 
| @@ -46,7 +46,7 @@ IPC_ENUM_TRAITS_MAX_VALUE( | 
| // Sent to all child processes to enable trace event recording. | 
| IPC_MESSAGE_CONTROL3(TracingMsg_BeginTracing, | 
| std::string /*  trace_config_str */, | 
| -                     base::TraceTicks /* browser_time */, | 
| +                     base::TimeTicks /* browser_time */, | 
| uint64 /* Tracing process id (hash of child id) */) | 
|  | 
| // Sent to all child processes to disable trace event recording. | 
| @@ -58,7 +58,7 @@ IPC_MESSAGE_CONTROL0(TracingMsg_CancelTracing) | 
| // Sent to all child processes to start monitoring. | 
| IPC_MESSAGE_CONTROL2(TracingMsg_EnableMonitoring, | 
| std::string /*  trace_config_str */, | 
| -                     base::TraceTicks /* browser_time */) | 
| +                     base::TimeTicks /* browser_time */) | 
|  | 
| // Sent to all child processes to stop monitoring. | 
| IPC_MESSAGE_CONTROL0(TracingMsg_DisableMonitoring) | 
|  |