Add CertIssuerSourceAia: authorityInfoAccess fetching for CertPathBuilder.

net/data/cert_issuer_source_aia_unittest/target_three_aia.pem

Index: net/data/cert_issuer_source_aia_unittest/target_three_aia.pem
diff --git a/net/data/cert_issuer_source_aia_unittest/target_three_aia.pem b/net/data/cert_issuer_source_aia_unittest/target_three_aia.pem
new file mode 100644
index 0000000000000000000000000000000000000000..3a542059270f8bbad59f4146e81399e9f8a73ae9
--- /dev/null
+++ b/net/data/cert_issuer_source_aia_unittest/target_three_aia.pem
@@ -0,0 +1,92 @@
+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:ee:98:97:4a:36:9c:ba:8d:71:1f:d2:d5:6f:8a:
+                    4d:40:ba:7b:5b:55:e2:6e:a2:db:fa:d8:18:ff:26:
+                    3a:7b:8e:09:fd:7a:e8:42:95:61:b5:30:ba:5a:2e:
+                    3d:25:44:4b:52:d2:c5:39:6e:3d:3b:8e:30:ed:99:
+                    f6:17:a7:37:e5:c1:2d:74:4a:1b:b6:dc:18:ef:5f:
+                    5e:6b:1c:93:df:50:f6:2e:e1:2f:83:1f:29:76:44:
+                    8c:d0:a9:05:34:8c:a0:41:f0:2c:eb:e4:a0:07:de:
+                    f5:a7:bd:c1:65:4a:ea:2b:bc:c9:c5:f9:eb:ad:ba:
+                    9b:2a:c3:18:49:92:75:e9:8a:49:a9:0a:57:72:51:
+                    ee:67:7f:f2:cd:b4:d3:e2:d7:22:5a:ad:91:2f:3a:
+                    e6:63:c8:39:34:fd:1f:71:71:fd:ee:7a:a8:cb:de:
+                    ef:b4:e4:30:d5:97:56:5d:77:e1:ee:04:3f:e9:9f:
+                    c7:8f:21:4c:38:a1:42:51:a7:30:c7:19:b3:62:74:
+                    d9:42:42:b1:63:0c:bf:ec:12:47:31:7c:52:65:ea:
+                    17:51:f2:b6:63:57:89:87:3e:93:5b:d0:6f:21:3d:
+                    a4:02:10:da:75:08:bd:e5:14:df:47:3e:79:a6:96:
+                    55:3f:23:ca:6e:5f:3e:54:22:07:42:2d:2b:db:87:
+                    f4:5f
+                Exponent: 65537 (0x10001)
+        X509v3 extensions:
+            X509v3 Subject Key Identifier: 
+                DE:56:E9:20:2C:BA:C3:2E:21:17:62:51:98:A2:D6:12:28:C4:6F:CE
+            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
+                CA Issuers - URI:http://url-for-aia3/I3.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
+         32:1a:6d:14:e2:a8:7d:4e:ef:c7:20:f9:dc:76:4c:7d:66:4b:
+         bd:c3:05:d3:91:01:95:c3:0f:27:0a:9e:02:f7:5d:68:70:01:
+         45:12:53:45:c4:44:f8:f5:23:db:a2:ea:73:94:4a:c3:c5:e2:
+         30:a5:0f:ac:3b:9a:05:3a:7e:3f:38:57:66:36:e1:0b:e5:58:
+         fa:25:be:cd:db:0b:ec:21:02:75:ee:74:fb:2a:87:f5:c2:00:
+         6f:dc:0f:31:76:dd:b2:90:c7:d6:17:b2:a2:43:fc:4b:0f:d8:
+         b6:1e:d7:a9:d2:3c:13:df:34:95:42:52:90:64:1a:c9:5d:71:
+         8a:02:0a:d7:2a:9f:78:f7:9b:71:df:15:27:f2:a8:2d:6f:d6:
+         13:e8:46:be:60:0b:3e:39:f1:23:75:68:a3:07:98:5d:1a:79:
+         11:66:43:67:0b:9f:32:04:2e:ea:02:12:86:39:39:01:de:7c:
+         30:bb:87:ae:d7:79:6a:e0:c0:cc:78:90:52:e0:a4:d0:f2:a0:
+         78:2e:9b:11:98:9f:6d:a0:ac:59:14:d1:cd:73:08:7e:09:04:
+         47:0f:76:38:8d:f5:ad:fa:3b:07:2e:9a:83:fe:91:69:c3:02:
+         b4:15:e8:05:8f:cd:c8:e2:3c:cd:1d:8f:99:66:ea:05:a7:7c:
+         b7:81:70:eb
+-----BEGIN CERTIFICATE-----
+MIIDvzCCAqegAwIBAgIBATANBgkqhkiG9w0BAQsFADAMMQowCAYDVQQDDAFJMB4X
+DTE1MDEwMTEyMDAwMFoXDTE2MDEwMTEyMDAwMFowETEPMA0GA1UEAwwGdGFyZ2V0
+MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA7piXSjacuo1xH9LVb4pN
+QLp7W1XibqLb+tgY/yY6e44J/XroQpVhtTC6Wi49JURLUtLFOW49O44w7Zn2F6c3
+5cEtdEobttwY719eaxyT31D2LuEvgx8pdkSM0KkFNIygQfAs6+SgB971p73BZUrq
+K7zJxfnrrbqbKsMYSZJ16YpJqQpXclHuZ3/yzbTT4tciWq2RLzrmY8g5NP0fcXH9
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+ZeoXUfK2Y1eJhz6TW9BvIT2kAhDadQi95RTfRz55ppZVPyPKbl8+VCIHQi0r24f0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+-----END CERTIFICATE-----