Adjust interfaces to indicate when tracking is in progress

base/tracked_objects.h

Index: base/tracked_objects.h
===================================================================
--- base/tracked_objects.h	(revision 109040)
+++ base/tracked_objects.h	(working copy)
@@ -662,6 +662,13 @@
   static bool InitializeAndSetTrackingStatus(bool status);
   static bool tracking_status();
 
+  // Special versions of Now() for getting times at start and end of a tracked
+  // run.  They are super fast when tracking is disabled, and have some interal

[ramant (doing other things), 2011/11/14 04:41:58]

nit: interal -> internal

[jar (doing other things), 2011/11/14 05:04:50]

Done.

+  // side effects when we are tracking, so that we can deduce the amount of time
+  // accumulated outside of execution of tracked runs.
+  static TrackedTime NowForStartOfRun();
+  static TrackedTime NowForEndOfRun();
+
   // Provide a time function that does nothing (runs fast) when we don't have
   // the profiler enabled.  It will generally be optimized away when it is
   // ifdef'ed to be small enough (allowing the profiler to be "compiled out" of