Update CertVerifyProcWeakDigestTest for Sierra (Mac OS 10.12)

net/cert/cert_verify_proc_unittest.cc

Index: net/cert/cert_verify_proc_unittest.cc
diff --git a/net/cert/cert_verify_proc_unittest.cc b/net/cert/cert_verify_proc_unittest.cc
index d5ccf60b52a9e63fcd174c654d87161ab471e407..0159e20385778f1d5ee598e7e894606f7118b607 100644
--- a/net/cert/cert_verify_proc_unittest.cc
+++ b/net/cert/cert_verify_proc_unittest.cc
@@ -1801,7 +1801,8 @@ const WeakDigestTestData kVerifyEndEntityTestData[] = {
 // Disabled on NSS - NSS caches chains/signatures in such a way that cannot
 // be cleared until NSS is cleanly shutdown, which is not presently supported
 // in Chromium.
-#if defined(USE_NSS_CERTS) || defined(OS_IOS)
+// OSX 10.12+ stops building the chain at the first weak digest.
+#if defined(USE_NSS_CERTS) || defined(OS_IOS) || defined(OS_MACOSX)
 #define MAYBE_VerifyEndEntity DISABLED_VerifyEndEntity
 #else
 #define MAYBE_VerifyEndEntity VerifyEndEntity
@@ -1849,7 +1850,8 @@ const WeakDigestTestData kVerifyIncompleteEETestData[] = {
 };
 // Disabled on NSS - libpkix does not return constructed chains on error,
 // preventing us from detecting/inspecting the verified chain.
-#if defined(USE_NSS_CERTS) || defined(OS_IOS)
+// OSX 10.12+ stops building the chain at the first weak digest.
+#if defined(USE_NSS_CERTS) || defined(OS_IOS) || defined(OS_MACOSX)
 #define MAYBE_VerifyIncompleteEndEntity DISABLED_VerifyIncompleteEndEntity
 #else
 #define MAYBE_VerifyIncompleteEndEntity VerifyIncompleteEndEntity
@@ -1874,7 +1876,8 @@ const WeakDigestTestData kVerifyMixedTestData[] = {
 };
 // NSS does not support MD4 and does not enable MD2 by default, making all
 // permutations invalid.
-#if defined(USE_NSS_CERTS) || defined(OS_IOS)
+// OSX 10.12+ stops building the chain at the first weak digest.
+#if defined(USE_NSS_CERTS) || defined(OS_IOS) || defined(OS_MACOSX)
 #define MAYBE_VerifyMixed DISABLED_VerifyMixed
 #else
 #define MAYBE_VerifyMixed VerifyMixed