Use the exact-width integer types defined in <stdint.h> rather than

net/cert/crl_set.cc

Index: net/cert/crl_set.cc
diff --git a/net/cert/crl_set.cc b/net/cert/crl_set.cc
index 2d4f5c3331ceada7d2b4d892a689ed22049e2ec8..bc2cecb2c77784cf1a0423a5b650a765b5c49b07 100644
--- a/net/cert/crl_set.cc
+++ b/net/cert/crl_set.cc
@@ -63,11 +63,11 @@ bool CRLSet::IsExpired() const {
   if (not_after_ == 0)
     return false;
 
-  uint64 now = base::Time::Now().ToTimeT();
+  uint64_t now = base::Time::Now().ToTimeT();
   return now > not_after_;
 }
 
-uint32 CRLSet::sequence() const {
+uint32_t CRLSet::sequence() const {
   return sequence_;
 }