increase crypto_unittest key sizes to satisfy NSS 3.19.1

crypto/nss_key_util_unittest.cc

Index: crypto/nss_key_util_unittest.cc
diff --git a/crypto/nss_key_util_unittest.cc b/crypto/nss_key_util_unittest.cc
index f8de8e236bb303a6077bf43fe9bbd208ba64f227..ff4d55a146094e032eb08f80674a6b8fa5966665 100644
--- a/crypto/nss_key_util_unittest.cc
+++ b/crypto/nss_key_util_unittest.cc
@@ -50,7 +50,7 @@ TEST_F(NSSKeyUtilTest, FindNSSKeyFromPublicKeyInfo) {
   // Create an NSS keypair, which will put the keys in the user's NSSDB.
   ScopedSECKEYPublicKey public_key;
   ScopedSECKEYPrivateKey private_key;
-  ASSERT_TRUE(GenerateRSAKeyPairNSS(internal_slot(), 256,
+  ASSERT_TRUE(GenerateRSAKeyPairNSS(internal_slot(), 512,
                                     false /* not permanent */, &public_key,
                                     &private_key));
 
@@ -68,7 +68,7 @@ TEST_F(NSSKeyUtilTest, FailedFindNSSKeyFromPublicKeyInfo) {
   // Create an NSS keypair, which will put the keys in the user's NSSDB.
   ScopedSECKEYPublicKey public_key;
   ScopedSECKEYPrivateKey private_key;
-  ASSERT_TRUE(GenerateRSAKeyPairNSS(internal_slot(), 256,
+  ASSERT_TRUE(GenerateRSAKeyPairNSS(internal_slot(), 512,
                                     false /* not permanent */, &public_key,
                                     &private_key));