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

components/data_reduction_proxy/core/browser/data_usage_store.cc

Index: components/data_reduction_proxy/core/browser/data_usage_store.cc
diff --git a/components/data_reduction_proxy/core/browser/data_usage_store.cc b/components/data_reduction_proxy/core/browser/data_usage_store.cc
index 220231bfd1d6e48c0303d14d07d53e6a223c1b82..80f4ff2743db48356d6ae01723d205d066cf31d5 100644
--- a/components/data_reduction_proxy/core/browser/data_usage_store.cc
+++ b/components/data_reduction_proxy/core/browser/data_usage_store.cc
@@ -56,7 +56,11 @@ base::Time BucketLowerBoundary(base::Time time) {
   exploded.minute -= exploded.minute % kDataUsageBucketLengthInMinutes;
   exploded.second = 0;
   exploded.millisecond = 0;
-  return base::Time::FromUTCExploded(exploded);
+
+  base::Time out_time;
+  bool conversion_success = base::Time::FromUTCExploded(exploded, &out_time);
+  DCHECK(conversion_success);
+  return out_time;
 }
 
 }  // namespace