pki library: Add CertIssuerSourceNSS that retrieves intermediate certs from NSS.

net/data/cert_issuer_source_static_unittest/e2.pem

Index: net/data/cert_issuer_source_static_unittest/e2.pem
diff --git a/net/data/cert_issuer_source_static_unittest/e2.pem b/net/data/cert_issuer_source_static_unittest/e2.pem
new file mode 100644
index 0000000000000000000000000000000000000000..c07000f73ce0f2f1aec2c2464909efdbd7ab9f38
--- /dev/null
+++ b/net/data/cert_issuer_source_static_unittest/e2.pem
@@ -0,0 +1,90 @@
+Generated by ./generate-certs.py.
+Refer to generator script docstring for details.
+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number: 2 (0x2)
+    Signature Algorithm: sha256WithRSAEncryption
+        Issuer: CN=I3
+        Validity
+            Not Before: Jan  1 12:00:00 2015 GMT
+            Not After : Jan  1 12:00:00 2016 GMT
+        Subject: CN=E2
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+                Public-Key: (2048 bit)
+                Modulus:
+                    00:c7:40:5e:d8:28:53:68:bd:2f:cb:ec:40:bb:fa:
+                    d2:0c:8f:06:6a:1d:e4:41:8b:48:d1:7f:02:00:01:
+                    a5:8e:5c:07:df:ae:e9:98:f8:9e:30:7e:ce:47:5f:
+                    3b:15:1e:c4:12:d8:1c:ce:95:84:24:75:1e:2a:a7:
+                    16:cb:14:28:18:34:e3:51:62:13:7a:43:fe:a4:34:
+                    4e:b8:a0:a4:53:46:3f:d7:42:21:63:34:55:e1:08:
+                    b1:ac:93:84:00:72:9a:ca:8b:91:19:44:9d:d1:2e:
+                    3f:69:00:d9:09:ab:c3:e4:de:19:8e:91:8b:65:d4:
+                    c3:3d:e3:f2:b5:ea:6a:60:a0:c6:8e:2a:8e:d2:f9:
+                    a3:fa:ca:26:2b:2a:4f:36:03:c2:3d:64:55:9f:38:
+                    24:60:11:4c:d6:94:3e:5a:61:2f:fe:39:76:bc:72:
+                    d4:15:d5:5f:4a:10:18:b8:99:da:51:89:ec:51:ce:
+                    ef:92:8c:f0:ec:5b:1a:83:c3:ad:59:05:a6:0d:cb:
+                    a5:c0:ad:09:c4:12:fb:4b:a7:5a:17:3b:f6:4b:af:
+                    a2:25:91:1c:db:97:8a:54:44:7f:14:db:88:69:59:
+                    62:f0:5e:23:2c:87:a0:9c:6e:d0:58:7f:de:a1:66:
+                    97:61:a8:1d:12:de:f9:aa:58:57:b7:c0:11:6e:df:
+                    53:17
+                Exponent: 65537 (0x10001)
+        X509v3 extensions:
+            X509v3 Subject Key Identifier: 
+                8F:E3:36:9B:E5:5C:3F:CC:AD:FF:DB:E9:ED:43:A2:FB:95:34:EB:44
+            X509v3 Authority Key Identifier: 
+                keyid:1B:D9:9D:7F:59:30:84:1C:E4:92:D1:19:FF:EA:8D:02:B3:C1:8E:50
+
+            Authority Information Access: 
+                CA Issuers - URI:http://url-for-aia/I3.cer
+
+            X509v3 CRL Distribution Points: 
+
+                Full Name:
+                  URI:http://url-for-crl/I3.crl
+
+            X509v3 Key Usage: critical
+                Digital Signature, Key Encipherment
+            X509v3 Extended Key Usage: 
+                TLS Web Server Authentication, TLS Web Client Authentication
+    Signature Algorithm: sha256WithRSAEncryption
+         73:92:fc:fb:89:b0:a0:d5:75:56:73:f7:70:44:75:45:d7:90:
+         88:2a:40:1f:f7:4d:be:47:00:d9:36:ca:b1:d0:35:9b:f5:b8:
+         d1:8a:80:90:6a:6e:fa:cb:31:c3:3b:55:01:95:06:17:d7:33:
+         45:f4:e1:a7:a6:7a:7f:c3:dc:4d:75:3b:a7:ae:74:e8:cb:9f:
+         39:9a:1f:5d:8e:34:af:c5:4a:a0:7d:8c:7e:30:69:b4:72:86:
+         bb:ef:1f:c9:4f:b9:59:b0:b3:f4:11:af:c9:b7:ae:72:4c:3f:
+         dd:57:40:67:bf:30:df:33:42:92:e1:33:a7:58:c0:fa:60:10:
+         a4:bc:9b:cf:3b:bc:6a:5d:67:f9:36:8e:9b:ea:38:a7:4e:10:
+         82:77:42:24:bf:17:37:41:ed:33:d6:87:74:09:8a:cb:c2:53:
+         10:3d:10:f3:31:69:23:e2:30:45:fb:8b:3c:49:88:9f:01:cf:
+         39:8c:11:fd:51:64:49:53:81:3b:67:3e:19:81:46:73:8b:e5:
+         d1:8b:a7:f0:38:b0:90:5b:48:37:2d:22:72:40:30:1b:31:ad:
+         5b:a2:84:de:94:ca:db:8d:11:3d:c9:2e:91:f8:3f:a3:7c:db:
+         45:2f:c7:29:57:5f:5a:11:eb:50:46:25:7e:4b:2f:7a:4a:02:
+         2e:75:96:75
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----