Have all trace points emit to ETW.

base/debug/trace_event_impl.cc

Index: base/debug/trace_event_impl.cc
diff --git a/base/debug/trace_event_impl.cc b/base/debug/trace_event_impl.cc
index ab3b36dccdb32adb54a6262d8edd1227ce42897a..81b74e133780d3f7f4b4d0a825492aa32afcd1d2 100644
--- a/base/debug/trace_event_impl.cc
+++ b/base/debug/trace_event_impl.cc
@@ -1564,6 +1564,13 @@ void TraceLog::AddTraceEventWithThreadIdAndTimestamp(
     }
   }
 
+#if defined (OS_WIN)
+  TraceEventETWProvider::TraceWithArgs(

[Sigurður Ásgeirsson, 2013/09/10 21:15:54]

As ETW provides runtime control of tracing, it would (IMHO) be more appropriate
to do this around line 1505, more like on ANDROID?

[fdoray, 2013/09/16 00:51:03]

Done.

+      GetCategoryGroupName(category_group_enabled), name, phase,
+      id, thread_names_[thread_id],
+      num_args, arg_names, arg_types, arg_values, convertable_values);
+#endif  // defined (OS_WIN)
+
   if (!subtle::NoBarrier_Load(&buffer_is_full_)) {
     TraceEvent trace_event(thread_id, now, thread_now, phase,
                            category_group_enabled, name, id,