Add CertIssuerSourceAia: authorityInfoAccess fetching for CertPathBuilder.

net/data/cert_issuer_source_aia_unittest/target_six_aia.pem

Index: net/data/cert_issuer_source_aia_unittest/target_six_aia.pem
diff --git a/net/data/cert_issuer_source_aia_unittest/target_six_aia.pem b/net/data/cert_issuer_source_aia_unittest/target_six_aia.pem
new file mode 100644
index 0000000000000000000000000000000000000000..2e07ea173feafa01129db3bf3cfb4b270c60edae
--- /dev/null
+++ b/net/data/cert_issuer_source_aia_unittest/target_six_aia.pem
@@ -0,0 +1,97 @@
+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:ad:a8:69:76:8e:4f:38:13:f9:dc:08:ea:d4:06:
+                    97:0b:13:9f:21:a8:df:d6:d3:9a:a7:f7:b5:0c:10:
+                    3a:3a:4a:4b:ff:d2:2e:ae:c2:1c:3e:c1:67:94:25:
+                    d4:cc:29:29:56:f7:32:d1:6a:1e:d9:14:09:48:36:
+                    0e:14:2e:30:aa:9d:80:9f:5f:2c:1b:38:73:e7:54:
+                    3d:4b:8e:d4:d0:b7:d6:5c:04:0e:be:ce:76:0d:8a:
+                    fc:9c:89:36:cf:ce:3f:85:b0:a0:3a:bb:8b:42:7c:
+                    71:39:1a:a4:77:78:10:72:86:c9:e5:92:a3:82:32:
+                    7a:e3:e7:84:98:a3:6d:77:23:d1:5b:11:62:b5:90:
+                    af:2f:f6:5e:ae:1d:a5:6b:83:df:d3:af:b9:14:fb:
+                    38:59:48:ab:f7:6c:0b:69:2b:69:31:3f:a6:9f:4b:
+                    53:69:0d:d0:26:bd:27:63:bc:f2:79:e1:51:2e:93:
+                    b7:2c:36:39:c9:1d:5d:af:d2:fa:f7:01:79:8e:b1:
+                    f3:9c:20:79:50:7c:32:43:48:18:09:e8:ab:98:79:
+                    bb:42:cb:36:38:13:c5:01:48:33:85:9d:c1:d0:6b:
+                    df:0f:e0:65:9f:10:66:ab:9b:1e:b7:10:ac:c8:a7:
+                    4d:49:24:bd:ab:b3:66:2b:8c:71:72:84:48:18:69:
+                    16:8d
+                Exponent: 65537 (0x10001)
+        X509v3 extensions:
+            X509v3 Subject Key Identifier: 
+                85:F3:1D:3E:B1:AC:1D:A0:34:20:CB:91:0E:FD:AF:25:B8:5E:3D:2E
+            X509v3 Authority Key Identifier: 
+                keyid:5D:B4:73:AA:1B:60:10:9E:0C:BC:16:BB:A4:0A:58:0D:B6:28:0E:04
+
+            Authority Information Access: 
+                CA Issuers - URI:http://url-for-aia/I.cer
+                CA Issuers - URI:http://url-for-aia2/I2.foo
+                CA Issuers - URI:http://url-for-aia3/I3.foo
+                CA Issuers - URI:http://url-for-aia4/I4.foo
+                CA Issuers - URI:http://url-for-aia5/I5.foo
+                CA Issuers - URI:http://url-for-aia6/I6.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
+         88:87:b2:59:3c:f8:eb:17:b6:e7:87:4e:96:c6:29:9d:3c:5f:
+         1d:09:85:6d:d7:78:68:a9:84:a1:14:1b:9b:f2:36:da:68:43:
+         b7:6a:99:6f:f0:de:b5:6b:65:b9:c8:a2:b2:da:fe:b6:f2:8b:
+         58:28:bd:9b:31:ff:b5:d8:c6:9a:52:3e:eb:6d:0a:c8:72:db:
+         d1:9a:64:66:aa:72:91:aa:e4:e9:c4:f7:81:d7:dc:ee:83:90:
+         9c:f4:b6:0c:ce:d3:39:b2:5d:25:c7:e5:6b:5e:5f:7f:c4:2c:
+         44:fa:6e:8a:b6:5b:93:a3:de:78:89:5a:cd:a2:8c:57:0f:c2:
+         22:4a:9f:bf:e7:94:a4:13:1d:ea:7c:39:0a:1d:6d:d4:37:a9:
+         b9:bd:be:2f:dd:c2:7c:d0:20:ff:57:d4:c1:2d:c6:7b:19:3a:
+         64:5d:d2:6b:01:17:cd:7f:7f:d7:43:12:70:3f:4e:60:19:ee:
+         03:eb:3e:74:00:4f:f5:f5:e9:79:e0:7b:7d:69:f7:c9:fe:19:
+         f6:35:04:da:28:90:07:ff:2d:38:33:1e:63:4c:c3:f9:38:c8:
+         92:fc:9f:df:8c:ee:13:57:48:b8:6f:c2:c9:71:83:d3:4e:5c:
+         b8:43:1e:04:98:10:06:9d:7b:67:d1:e9:e4:0e:11:80:06:c3:
+         8f:d8:59:d4
+-----BEGIN CERTIFICATE-----
+MIIEOTCCAyGgAwIBAgIBATANBgkqhkiG9w0BAQsFADAMMQowCAYDVQQDDAFJMB4X
+DTE1MDEwMTEyMDAwMFoXDTE2MDEwMTEyMDAwMFowETEPMA0GA1UEAwwGdGFyZ2V0
+MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArahpdo5POBP53Ajq1AaX
+CxOfIajf1tOap/e1DBA6OkpL/9IursIcPsFnlCXUzCkpVvcy0Woe2RQJSDYOFC4w
+qp2An18sGzhz51Q9S47U0LfWXAQOvs52DYr8nIk2z84/hbCgOruLQnxxORqkd3gQ
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+mHm7Qss2OBPFAUgzhZ3B0GvfD+BlnxBmq5setxCsyKdNSSS9q7NmK4xxcoRIGGkW
+jQIDAQABo4IBnzCCAZswHQYDVR0OBBYEFIXzHT6xrB2gNCDLkQ79ryW4Xj0uMB8G
+A1UdIwQYMBaAFF20c6obYBCeDLwWu6QKWA22KA4EMIH+BggrBgEFBQcBAQSB8TCB
+7jAkBggrBgEFBQcwAoYYaHR0cDovL3VybC1mb3ItYWlhL0kuY2VyMCYGCCsGAQUF
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+L0k1LmZvbzAmBggrBgEFBQcwAoYaaHR0cDovL3VybC1mb3ItYWlhNi9JNi5mb28w
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+DwEB/wQEAwIFoDAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDQYJKoZI
+hvcNAQELBQADggEBAIiHslk8+OsXtueHTpbGKZ08Xx0JhW3XeGiphKEUG5vyNtpo
+Q7dqmW/w3rVrZbnIorLa/rbyi1govZsx/7XYxppSPuttCshy29GaZGaqcpGq5OnE
+94HX3O6DkJz0tgzO0zmyXSXH5WteX3/ELET6boq2W5Oj3niJWs2ijFcPwiJKn7/n
+lKQTHep8OQodbdQ3qbm9vi/dwnzQIP9X1MEtxnsZOmRd0msBF81/f9dDEnA/TmAZ
+7gPrPnQAT/X16Xnge31p98n+GfY1BNookAf/LTgzHmNMw/k4yJL8n9+M7hNXSLhv
+wslxg9NOXLhDHgSYEAade2fR6eQOEYAGw4/YWdQ=
+-----END CERTIFICATE-----