Add CertIssuerSourceAia: authorityInfoAccess fetching for CertPathBuilder.

net/data/cert_issuer_source_aia_unittest/i.pem

Index: net/data/cert_issuer_source_aia_unittest/i.pem
diff --git a/net/data/cert_issuer_source_aia_unittest/i.pem b/net/data/cert_issuer_source_aia_unittest/i.pem
new file mode 100644
index 0000000000000000000000000000000000000000..e52dbb7c4847798336ee3125a095f127c814ef54
--- /dev/null
+++ b/net/data/cert_issuer_source_aia_unittest/i.pem
@@ -0,0 +1,88 @@
+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number: 2 (0x2)
+    Signature Algorithm: sha256WithRSAEncryption
+        Issuer: CN=Root
+        Validity
+            Not Before: Jan  1 12:00:00 2015 GMT
+            Not After : Jan  1 12:00:00 2016 GMT
+        Subject: CN=I
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+                Public-Key: (2048 bit)
+                Modulus:
+                    00:d5:53:f7:08:59:cb:f1:35:f2:71:24:70:49:7f:
+                    f6:d7:3d:00:92:3f:cc:18:f7:1b:07:3c:89:0a:4c:
+                    f7:c4:4b:30:57:ce:88:d9:c9:5f:61:47:b9:7e:44:
+                    34:2e:a5:1e:6b:f8:09:94:ae:b1:bb:0d:f3:11:33:
+                    72:ca:00:70:5f:87:e0:da:4f:c8:ab:e3:f2:35:2a:
+                    e6:a6:50:c5:9d:67:96:f3:9e:6e:6a:2a:34:fa:12:
+                    4c:a9:56:29:76:8c:3f:e2:5e:5f:ad:95:66:3e:d2:
+                    2f:9e:ff:1c:85:23:30:65:0e:0a:46:ac:dc:cf:ee:
+                    bc:87:d5:97:b9:1e:4e:7d:db:d8:b0:30:64:b2:d2:
+                    5c:91:2f:90:23:84:fb:9c:94:73:97:e1:16:68:30:
+                    83:d5:14:e5:24:9e:53:c7:97:e1:f3:12:57:a8:e0:
+                    71:1e:db:3c:c3:9b:b1:88:a2:4d:12:17:08:98:ec:
+                    ed:3d:bb:74:0a:66:75:6d:a1:6b:ce:93:1e:98:83:
+                    09:19:05:a3:62:71:fa:e8:88:53:48:9f:51:42:3e:
+                    0a:f4:b1:84:cc:75:3b:65:e4:b1:7a:72:d6:90:de:
+                    cd:5e:95:39:af:eb:7c:2b:09:16:dc:49:05:3c:70:
+                    a3:17:4a:89:9a:33:07:e3:8e:fd:84:fd:f7:9d:15:
+                    70:27
+                Exponent: 65537 (0x10001)
+        X509v3 extensions:
+            X509v3 Subject Key Identifier: 
+                4A:3F:36:DB:AC:83:60:8A:A2:E9:24:25:39:A0:47:00:C2:71:E3:FE
+            X509v3 Authority Key Identifier: 
+                keyid:25:D5:CC:4A:EA:CA:BD:2F:B6:F4:F5:65:FB:33:9F:06:66:95:10:6B
+
+            Authority Information Access: 
+                CA Issuers - URI:http://url-for-aia/Root.cer
+
+            X509v3 CRL Distribution Points: 
+
+                Full Name:
+                  URI:http://url-for-crl/Root.crl
+
+            X509v3 Key Usage: critical
+                Certificate Sign, CRL Sign
+            X509v3 Basic Constraints: critical
+                CA:TRUE
+    Signature Algorithm: sha256WithRSAEncryption
+         62:80:cb:54:b4:ca:a5:db:92:d0:b6:80:0d:0a:2a:64:a5:67:
+         4d:8a:81:57:63:bf:90:4b:12:94:60:f1:b3:78:c5:ee:0d:c7:
+         06:79:46:fd:77:9f:26:c9:45:33:35:ce:ac:16:d3:46:73:a4:
+         30:8c:18:61:27:43:b1:7d:e1:03:ec:08:32:ff:a0:c0:a5:05:
+         75:42:6f:19:78:8d:3f:37:84:1a:74:de:34:d6:5b:67:da:13:
+         40:e8:df:ed:1a:f6:c7:d2:7d:6a:cd:40:b0:82:17:10:6c:bc:
+         e3:7a:e0:ca:70:4f:f7:85:23:b9:d4:ca:7d:9a:3e:ff:7b:92:
+         ef:be:14:b5:ba:8b:06:ca:87:3a:4a:eb:3c:40:82:36:5b:b9:
+         0e:cb:ef:19:c0:ed:22:84:c8:3f:c5:ca:7e:12:20:97:44:f6:
+         ce:92:21:58:fc:07:7b:ec:b7:5f:c2:95:91:2e:2c:6d:87:be:
+         2d:73:8e:36:63:e5:f7:e3:45:63:6e:5e:ee:64:c6:22:ab:61:
+         fd:06:d7:92:05:0e:c1:d4:85:33:75:9c:43:61:ee:24:97:c0:
+         1b:61:9b:1c:76:91:ba:4d:2d:b1:35:1e:c3:87:15:2e:45:99:
+         06:e2:4a:b8:f0:41:fb:3a:34:44:de:28:dd:49:7f:a5:ee:83:
+         38:f0:48:f1
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----