Delete SecCertificate equality hacks for old macOS versions

net/cert/x509_certificate_mac.cc

Index: net/cert/x509_certificate_mac.cc
diff --git a/net/cert/x509_certificate_mac.cc b/net/cert/x509_certificate_mac.cc
index 3c3c8cfc94a56c4bd3b1eedab664f3ba7bb3603b..b4db758502342b6d9704863fcbb0a011cc618d90 100644
--- a/net/cert/x509_certificate_mac.cc
+++ b/net/cert/x509_certificate_mac.cc
@@ -286,15 +286,7 @@ bool X509Certificate::GetDEREncoded(X509Certificate::OSCertHandle cert_handle,
 bool X509Certificate::IsSameOSCert(X509Certificate::OSCertHandle a,
                                    X509Certificate::OSCertHandle b) {
   DCHECK(a && b);
-  if (a == b)

[mattm, 2017/03/17 01:15:53]

was doing this check here before calling CFEqual an optimization?

[Ryan Sleevi, 2017/03/17 14:13:58]

Yup

-    return true;
-  if (CFEqual(a, b))
-    return true;
-  CSSM_DATA a_data, b_data;
-  return SecCertificateGetData(a, &a_data) == noErr &&
-      SecCertificateGetData(b, &b_data) == noErr &&
-      a_data.Length == b_data.Length &&
-      memcmp(a_data.Data, b_data.Data, a_data.Length) == 0;
+  return CFEqual(a, b);
 }
 
 // static