Remove some thread-unsafe statics in

net/cert/cert_verify_proc.cc

Index: net/cert/cert_verify_proc.cc
diff --git a/net/cert/cert_verify_proc.cc b/net/cert/cert_verify_proc.cc
index 8fdd93cbb1bb0c4720273867ee9c9de3fb723ed6..3386cd578781cb4ba2117f2f4749aa413f2341a3 100644
--- a/net/cert/cert_verify_proc.cc
+++ b/net/cert/cert_verify_proc.cc
@@ -693,12 +693,12 @@ bool CertVerifyProc::HasTooLongValidity(const X509Certificate& cert) {
   if (exploded_expiry.day_of_month > exploded_start.day_of_month)
     ++month_diff;
 
-  static const base::Time time_2012_07_01 =
-      base::Time::FromUTCExploded({2012, 7, 0, 1, 0, 0, 0, 0});
-  static const base::Time time_2015_04_01 =
-      base::Time::FromUTCExploded({2015, 4, 0, 1, 0, 0, 0, 0});
-  static const base::Time time_2019_07_01 =
-      base::Time::FromUTCExploded({2019, 7, 0, 1, 0, 0, 0, 0});
+  const base::Time time_2012_07_01 =
+      base::Time::FromInternalValue(12985574400000000);
+  const base::Time time_2015_04_01 =
+      base::Time::FromInternalValue(13072320000000000);
+  const base::Time time_2019_07_01 =
+      base::Time::FromInternalValue(13206412800000000);
 
   // For certificates issued before the BRs took effect.
   if (start < time_2012_07_01 && (month_diff > 120 || expiry > time_2019_07_01))