Adding raw tracing to trace framework.

base/debug/trace_event_impl.h

Index: base/debug/trace_event_impl.h
diff --git a/base/debug/trace_event_impl.h b/base/debug/trace_event_impl.h
index 33e782c04a57455562630ec196236617c846c4d8..8c0efe9c71b68393ff72b1b7e35d8dda5a680c27 100644
--- a/base/debug/trace_event_impl.h
+++ b/base/debug/trace_event_impl.h
@@ -280,6 +280,19 @@ class BASE_EXPORT TraceLog {
                                const char* name,
                                const void* id,
                                const std::string& extra);
+  int AddTraceEventExplicit(char phase,
+                            const unsigned char* category_enabled,
+                            const char* name,
+                            int thread_id,
+                            int64 timestamp,
+                            unsigned long long id,

[jar (doing other things), 2012/12/06 17:28:59]

nit: Why do we use long long rather than int64 (or in this case, uint64)?

[dsinclair, 2012/12/06 17:38:52]

I used it here to keep consistent with the existing AddTraceEvent method. I
don't know why it was originally chosen, nduca@ maybe able to fill that in.

+                            int num_args,
+                            const char** arg_names,
+                            const unsigned char* arg_types,
+                            const unsigned long long* arg_values,
+                            int threshold_begin_id,
+                            long long threshold,
+                            unsigned char flags);
 
   // For every matching event, a notification will be fired. NOTE: the
   // notification will fire for each matching event that has already occurred
@@ -366,6 +379,21 @@ class BASE_EXPORT TraceLog {
   static void ApplyATraceEnabledFlag(unsigned char* category_enabled);
 #endif
 
+  int AddTraceEventInternal(NotificationHelper& notifier,
+                            TimeTicks timestamp,
+                            char phase,
+                            const unsigned char* category_enabled,
+                            const char* name,
+                            int thread_id,
+                            unsigned long long id,
+                            int num_args,
+                            const char** arg_names,
+                            const unsigned char* arg_types,
+                            const unsigned long long* arg_values,
+                            int threshold_begin_id,
+                            long long threshold,
+                            unsigned char flags);
+
   // TODO(nduca): switch to per-thread trace buffers to reduce thread
   // synchronization.
   // This lock protects TraceLog member accesses from arbitrary threads.