Don't compile with TraceLog support on by default.

base/trace_event.h

Index: base/trace_event.h
diff --git a/base/trace_event.h b/base/trace_event.h
index d2b6ef116f4fce97300afe308155abd7d9948992..3eb191d22007d27122a9df2ca3867e8d10ab1feb 100644
--- a/base/trace_event.h
+++ b/base/trace_event.h
@@ -29,6 +29,12 @@
 #include "base/time.h"
 #include "base/timer.h"
 
+#if 1  // Set to 0 to compile with tracing.

[Mark Mentovai, 2009/08/20 01:44:34]

Can we make this something like #ifndef ENABLE_TRACE_EVENT?

+#define TRACE_EVENT_BEGIN(name, id, extra) ((void) 0)
+#define TRACE_EVENT_END(name, id, extra) ((void) 0)
+#define TRACE_EVENT_INSTANT(name, id, extra) ((void) 0)
+
+#else
 // Use the following macros rather than using the TraceLog class directly as the
 // underlying implementation may change in the future.  Here's a sample usage:
 // TRACE_EVENT_BEGIN("v8.run", documentId, scriptLocation);
@@ -63,6 +69,7 @@
                                           extra, \
                                           __FILE__, \
                                           __LINE__)
+#endif

[Mark Mentovai, 2009/08/20 01:44:34]

Put a comment saying what you're ending, whatever you decide to call it.

 
 namespace base {
 class ProcessMetrics;