Add CertIssuerSourceAia: authorityInfoAccess fetching for CertPathBuilder.

net/data/cert_issuer_source_aia_unittest/target_two_aia.pem

Index: net/data/cert_issuer_source_aia_unittest/target_two_aia.pem
diff --git a/net/data/cert_issuer_source_aia_unittest/target_two_aia.pem b/net/data/cert_issuer_source_aia_unittest/target_two_aia.pem
new file mode 100644
index 0000000000000000000000000000000000000000..2bb999b0f45213ec196dd2278e6d02a60d910f99
--- /dev/null
+++ b/net/data/cert_issuer_source_aia_unittest/target_two_aia.pem
@@ -0,0 +1,90 @@
+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number: 1 (0x1)
+    Signature Algorithm: sha256WithRSAEncryption
+        Issuer: CN=I
+        Validity
+            Not Before: Jan  1 12:00:00 2015 GMT
+            Not After : Jan  1 12:00:00 2016 GMT
+        Subject: CN=target
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+                Public-Key: (2048 bit)
+                Modulus:
+                    00:f2:8b:3f:05:de:30:df:bc:e3:59:1b:70:ed:da:
+                    4b:a7:5f:51:84:43:9a:da:13:49:17:32:69:7a:4d:
+                    d3:28:41:1c:22:ee:e9:e5:70:dc:a4:39:4a:76:c4:
+                    d8:2c:9d:62:c3:0d:d5:f0:50:d6:d9:15:72:26:e9:
+                    22:12:e3:5b:bb:42:eb:e7:c1:38:b4:ad:24:74:93:
+                    9f:5a:91:23:6a:8c:fd:b5:1d:98:b9:e2:51:6d:36:
+                    76:e2:26:09:ec:39:22:89:49:9b:c7:c3:79:66:7f:
+                    01:ce:ad:98:3b:49:13:60:c6:eb:e2:e6:9c:6c:2e:
+                    4b:f4:20:c6:27:48:67:c9:cf:fe:56:47:ba:64:2a:
+                    40:68:07:b4:11:72:58:13:3d:a9:80:ba:fe:a0:05:
+                    e7:4f:2e:f8:98:57:21:18:da:ab:06:49:07:12:b8:
+                    30:21:2a:84:44:d4:63:64:1e:00:b3:54:65:e6:d1:
+                    07:97:8b:05:95:6b:1a:68:30:0c:75:de:08:f7:c8:
+                    c8:2a:c8:5a:7a:6c:97:91:1f:e9:ba:a6:57:b0:fb:
+                    12:19:93:a8:bc:ae:39:7e:a5:12:51:84:b7:e1:45:
+                    cd:09:0b:8f:cb:d4:16:6f:03:37:ec:2d:ca:ec:61:
+                    29:4b:08:34:5a:6a:ac:1d:34:2c:a1:e3:80:e3:80:
+                    16:17
+                Exponent: 65537 (0x10001)
+        X509v3 extensions:
+            X509v3 Subject Key Identifier: 
+                2E:ED:22:54:FA:E3:2A:8B:72:84:C1:20:BA:0F:A6:7C:7F:07:01:F9
+            X509v3 Authority Key Identifier: 
+                keyid:4A:3F:36:DB:AC:83:60:8A:A2:E9:24:25:39:A0:47:00:C2:71:E3:FE
+
+            Authority Information Access: 
+                CA Issuers - URI:http://url-for-aia/I.cer
+                CA Issuers - URI:http://url-for-aia2/I2.foo
+
+            X509v3 CRL Distribution Points: 
+
+                Full Name:
+                  URI:http://url-for-crl/I.crl
+
+            X509v3 Key Usage: critical
+                Digital Signature, Key Encipherment
+            X509v3 Extended Key Usage: 
+                TLS Web Server Authentication, TLS Web Client Authentication
+    Signature Algorithm: sha256WithRSAEncryption
+         7d:20:b1:3f:24:94:62:b4:a1:57:a5:ad:53:d6:f0:da:bd:e2:
+         44:18:e7:f3:73:a6:2a:2a:91:4d:75:39:bd:d3:d1:83:30:89:
+         83:62:34:de:5a:90:ba:c9:3a:92:34:5d:82:b6:58:52:14:55:
+         e8:ff:c6:a1:30:67:c6:c8:ba:14:a1:da:28:e3:e0:36:eb:a2:
+         d6:da:83:b3:e9:7b:76:82:fa:1f:3c:52:1b:02:72:a7:51:55:
+         a4:3f:23:ca:b1:eb:b6:dd:5c:ef:ff:57:90:c5:ca:b6:8e:27:
+         d3:a0:23:08:bc:fe:51:3d:87:4d:1a:8e:e6:e3:73:c1:ba:f6:
+         02:79:f8:e7:8c:f2:bb:2c:51:5d:f6:1f:f5:9f:8a:d7:61:13:
+         2a:dd:4d:fc:44:91:a1:28:c8:63:4f:ef:c4:45:f4:54:1b:06:
+         6a:18:ef:98:6b:5c:c3:0c:c8:5d:a9:c2:d6:69:5f:5d:42:ec:
+         2c:69:54:4f:53:0c:20:0c:de:29:b8:62:4d:58:bc:fb:2d:f7:
+         be:7d:50:71:5d:21:c4:e0:33:6b:5c:dc:42:f7:04:e6:c3:e9:
+         90:13:c9:99:e7:71:40:9a:01:7d:ea:bf:3e:0c:8d:ec:45:d9:
+         9e:65:dd:d7:19:78:9f:8b:54:fc:bb:0d:2e:81:81:17:88:aa:
+         a1:89:5f:f4
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----