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

components/autofill/content/browser/risk/fingerprint.cc

Index: components/autofill/content/browser/risk/fingerprint.cc
diff --git a/components/autofill/content/browser/risk/fingerprint.cc b/components/autofill/content/browser/risk/fingerprint.cc
index 08ed54eb772b256dc17b4fd375f9b93030c4a24b..67d4847ff01ce8326c7cbe1d36fad40343ae6795 100644
--- a/components/autofill/content/browser/risk/fingerprint.cc
+++ b/components/autofill/content/browser/risk/fingerprint.cc
@@ -66,7 +66,11 @@ base::TimeDelta GetTimezoneOffset() {
   base::Time::Exploded local;
   utc.LocalExplode(&local);
 
-  return base::Time::FromUTCExploded(local) - utc;
+  base::Time out_time;
+  bool conversion_success = base::Time::FromUTCExploded(local, &out_time);
+  DCHECK(conversion_success);
+
+  return out_time - utc;
 }
 
 // Returns the concatenation of the operating system name and version, e.g.