Make callers of FromUTC(Local)Exploded in chrome/ use new time API.

chrome/installer/gcapi/gcapi_omaha_experiment.cc

Index: chrome/installer/gcapi/gcapi_omaha_experiment.cc
diff --git a/chrome/installer/gcapi/gcapi_omaha_experiment.cc b/chrome/installer/gcapi/gcapi_omaha_experiment.cc
index 5235afd20a9a7d5a91bb68a608d3634f42f3684f..a34a146f83f66c0d05b5c8df86d3d44ef186f095 100644
--- a/chrome/installer/gcapi/gcapi_omaha_experiment.cc
+++ b/chrome/installer/gcapi/gcapi_omaha_experiment.cc
@@ -18,9 +18,12 @@ namespace {
 
 // Returns the number of weeks since 2/3/2003.
 int GetCurrentRlzWeek(const base::Time& current_time) {
-  base::Time::Exploded february_third_2003_exploded =
+  const base::Time::Exploded february_third_2003_exploded =
       {2003, 2, 1, 3, 0, 0, 0, 0};
-  base::Time f = base::Time::FromUTCExploded(february_third_2003_exploded);
+  base::Time f;
+  bool conversion_success =
+      base::Time::FromUTCExploded(february_third_2003_exploded, &f);
+  DCHECK(conversion_success);
   base::TimeDelta delta = current_time - f;
   return delta.InDays() / 7;
 }