Add Startup Timing to CPM

base/time.h

Index: base/time.h
diff --git a/base/time.h b/base/time.h
index 97010cbffc0e969062e435ebbf5d214fceb96a51..154a3d2e4fcd12a44aff8d6dfb2578332422de28 100644
--- a/base/time.h
+++ b/base/time.h
@@ -81,6 +81,11 @@ class BASE_EXPORT TimeDelta {
     return delta_;
   }
 
+  // Returns true if this object has not been initialized.
+  bool is_null() const {

[Yoyo Zhou, 2012/07/31 09:57:32]

I'm not sure this is right. A delta of 0 could actually be valid (whereas a Time
of 0 is not).

[Devlin, 2012/07/31 16:43:40]

Oooh, good point. I was wondering why there wasn't already one of these... :)
Done.

+    return delta_ == 0;
+  }
+
 #if defined(OS_POSIX)
   struct timespec ToTimeSpec() const;
 #endif