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..b89a59831d91343b2ec738dadc0a05d4199b9b7a
--- /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:a6:9b:8a:af:3c:e1:f4:00:96:d0:7e:c0:33:21:
+                    5d:f6:89:41:a8:4b:0a:a0:4f:cd:55:4e:e7:f4:be:
+                    67:c3:4f:69:41:b7:06:13:8f:a5:d9:a9:45:0f:13:
+                    a2:25:48:a6:0b:1f:fb:c2:61:d8:ee:3f:0e:c4:ce:
+                    cd:36:9f:e6:73:6b:ca:b9:6b:6d:55:f7:61:64:b1:
+                    85:bb:61:ea:f3:1f:d4:6e:8b:cb:0b:47:e5:60:98:
+                    a4:ab:be:62:70:df:3f:dc:63:37:9f:cb:16:5e:c1:
+                    e7:38:5c:6c:f5:d4:f5:ce:c4:ec:82:23:0e:b4:a1:
+                    96:40:c5:e8:ce:39:7f:63:be:87:39:94:a6:d3:eb:
+                    43:c9:19:37:7a:97:27:03:7a:46:51:71:9d:38:04:
+                    30:ae:20:bb:28:69:b4:68:b9:cc:88:29:63:e9:1c:
+                    16:f4:c3:94:ec:bd:b4:b4:75:8b:05:2b:6d:98:96:
+                    4a:ca:ad:55:92:fd:fa:53:09:8a:ff:4d:f5:62:e9:
+                    95:3e:15:7a:7e:23:65:c5:aa:55:15:13:9b:b4:9e:
+                    8a:e1:f0:01:e2:a8:2b:ac:b6:bf:aa:b2:8d:85:80:
+                    30:d7:ed:0a:24:78:d2:83:46:29:b7:5c:42:8e:ad:
+                    8d:3a:d9:b8:ef:d3:5e:13:6a:3b:5b:42:d1:f6:b6:
+                    23:d7
+                Exponent: 65537 (0x10001)
+        X509v3 extensions:
+            X509v3 Subject Key Identifier: 
+                8A:A2:2E:9D:41:67:1D:60:D2:82:F7:96:D4:53:5A:97:22:83:C7:75
+            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
+
+            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
+         a5:c4:8d:e3:9e:72:cb:88:50:df:ee:44:96:f3:3d:f3:0d:37:
+         be:b8:1c:39:79:80:a3:88:ac:3b:a2:01:73:7e:97:0f:ce:dc:
+         3c:c1:34:e7:fc:c3:9d:f1:fa:13:3a:93:a1:35:31:dd:42:8b:
+         8c:0e:0a:9e:01:42:10:93:b0:a5:16:43:32:c9:f1:1c:56:bf:
+         7e:5c:e3:c5:99:7d:19:a1:0a:bf:d0:92:c8:77:f7:5b:bb:d8:
+         ac:28:c8:d9:0c:9c:e4:02:b0:09:28:f0:56:e5:03:31:50:e5:
+         3d:7d:ba:8f:c8:94:9e:90:67:2c:4e:d9:2c:3d:62:b4:3c:e9:
+         5e:0a:d9:82:7b:5b:b7:19:0b:a8:6f:e1:14:c2:8f:4b:52:b4:
+         07:54:1b:d9:cf:4d:7a:ab:90:58:15:93:e6:04:53:3b:81:87:
+         20:37:53:65:27:dd:ba:ac:d5:ca:75:21:f7:5b:c1:45:8d:a6:
+         14:68:33:cf:2e:cd:19:09:9e:ad:07:15:5c:6d:52:6a:c5:fc:
+         6c:cd:39:ce:7b:8b:62:ea:cb:7d:c2:d2:8f:99:9b:af:e8:c8:
+         9a:a8:ed:08:92:00:b1:ed:c5:e4:20:55:c6:5c:ad:5e:df:2d:
+         92:b7:d9:d6:fc:9b:cc:6f:eb:ae:55:cc:53:26:8c:68:54:96:
+         35:23:eb:fd
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----