Move Cast certificate verification code from extensions to components.

extensions/test/data/cast_certificates/eureka_ca.pem

-$ openssl x509 -text -noout < [CERTIFICATE]
-Certificate:
-    Data:
-        Version: 3 (0x2)
-        Serial Number: 1 (0x1)
-    Signature Algorithm: sha1WithRSAEncryption
-        Issuer: C=US, ST=California, L=Mountain View, O=Google Inc, OU=Google TV, CN=Eureka Root CA
-        Validity
-            Not Before: Dec 17 22:39:33 2012 GMT
-            Not After : Dec 12 22:39:33 2032 GMT
-        Subject: C=US, ST=California, L=Mountain View, O=Google Inc, OU=Google TV, CN=Eureka Root CA
-        Subject Public Key Info:
-            Public Key Algorithm: rsaEncryption
-                Public-Key: (2048 bit)
-                Modulus:
-                    00:b9:11:d0:ea:12:dc:32:e1:df:5c:33:6b:19:73:
-                    1d:9d:9e:d0:39:76:bf:a5:84:09:a6:fd:6e:6d:e9:
-                    dc:8f:36:4e:e9:88:02:bd:9f:f4:e8:44:fd:4c:f5:
-                    9a:02:56:6a:47:2a:63:6c:58:45:cc:7c:66:24:dc:
-                    79:79:c3:2a:a4:b2:8b:a0:f7:a2:b5:cd:06:7e:db:
-                    be:ec:0c:86:f2:0d:24:60:74:84:ca:29:23:84:02:
-                    d8:a7:ed:3b:f1:ec:26:47:54:e3:b1:2d:e6:64:0f:
-                    f6:72:c5:e9:98:52:17:c0:fc:f2:2c:20:c8:40:f8:
-                    47:c9:32:9e:3b:97:b1:8b:f5:98:24:70:63:66:19:
-                    c1:52:e8:04:05:3d:5f:8d:bc:d8:4b:af:77:98:6f:
-                    1f:78:d1:b6:50:27:4d:e4:ec:14:69:67:1f:58:af:
-                    a9:a0:11:26:3c:94:32:07:7f:d7:e9:69:1f:ae:3f:
-                    4f:63:8a:8f:89:d6:f2:19:78:5c:21:8e:b1:b6:57:
-                    d8:c0:e1:ee:7d:6e:dd:f1:3a:0a:6a:f1:ba:ff:f9:
-                    83:2f:dc:b5:a4:20:17:63:36:ef:c8:62:19:cc:56:
-                    ce:b2:ea:31:89:4b:78:58:c1:bf:03:13:99:e0:12:
-                    f2:88:aa:9b:94:da:dd:76:79:17:1e:34:d1:0a:c4:
-                    07:45
-                Exponent: 65537 (0x10001)
-        X509v3 extensions:
-            X509v3 Subject Key Identifier: 
-                44:4E:2A:47:58:D8:B9:48:91:F6:4F:CE:74:A9:1D:32:9A:8D:8D:E9
-            X509v3 Authority Key Identifier: 
-                keyid:44:4E:2A:47:58:D8:B9:48:91:F6:4F:CE:74:A9:1D:32:9A:8D:8D:E9
-
-            X509v3 Basic Constraints: 
-                CA:TRUE
-    Signature Algorithm: sha1WithRSAEncryption
-         3f:c8:26:a0:6e:5c:05:40:79:a1:98:a9:33:de:68:74:85:ee:
-         ae:b7:1c:33:59:b0:11:de:9f:f4:4f:d3:eb:51:09:7d:47:7e:
-         6e:51:85:f4:54:cd:83:98:25:b1:ba:b0:57:ec:93:db:12:e2:
-         ec:51:49:7a:96:73:9b:c8:96:6d:85:8c:d3:e1:3c:fa:32:e2:
-         58:0c:77:6d:87:0c:34:01:aa:30:a9:76:e0:c0:e7:db:5e:1b:
-         e9:10:30:a4:e0:09:49:26:b9:58:cd:5a:07:e5:50:75:de:9a:
-         3b:f6:53:7e:b1:53:5e:45:27:4f:17:e3:08:33:b2:50:0a:bb:
-         f4:fc:25:97:29:de:41:75:30:fa:77:38:aa:65:8a:73:4f:ea:
-         11:7b:eb:7c:17:60:27:0e:bc:3e:76:52:d8:8b:ed:1a:f8:eb:
-         37:bb:11:fd:ae:70:17:0a:fe:e0:ad:06:b3:1f:69:8a:72:04:
-         c2:c0:33:0b:d6:2f:63:4c:33:11:14:b8:62:36:88:c5:03:65:
-         01:19:a3:ef:00:bb:6f:0e:92:ff:34:1c:a1:d6:31:d0:5c:5e:
-         9f:99:7d:c7:ca:bd:7c:72:0b:f4:5c:a5:7e:6e:04:a8:d2:99:
-         2c:51:01:14:fe:a2:48:f0:7e:be:84:0d:b4:d3:e2:f3:0e:7d:
-         de:8b:f5:33
------BEGIN CERTIFICATE-----
-MIIDwzCCAqugAwIBAgIBATANBgkqhkiG9w0BAQUFADB8MQswCQYDVQQGEwJVUzETMBEGA1UECAw
-KQ2FsaWZvcm5pYTEWMBQGA1UEBwwNTW91bnRhaW4gVmlldzETMBEGA1UECgwKR29vZ2xlIEluYz
-ESMBAGA1UECwwJR29vZ2xlIFRWMRcwFQYDVQQDDA5FdXJla2EgUm9vdCBDQTAeFw0xMjEyMTcyM
-jM5MzNaFw0zMjEyMTIyMjM5MzNaMHwxCzAJBgNVBAYTAlVTMRMwEQYDVQQIDApDYWxpZm9ybmlh
-MRYwFAYDVQQHDA1Nb3VudGFpbiBWaWV3MRMwEQYDVQQKDApHb29nbGUgSW5jMRIwEAYDVQQLDAl
-Hb29nbGUgVFYxFzAVBgNVBAMMDkV1cmVrYSBSb290IENBMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ
-8AMIIBCgKCAQEAuRHQ6hLcMuHfXDNrGXMdnZ7QOXa/pYQJpv1ubencjzZO6YgCvZ/06ET9TPWaA
-lZqRypjbFhFzHxmJNx5ecMqpLKLoPeitc0Gftu+7AyG8g0kYHSEyikjhALYp+078ewmR1TjsS3m
-ZA/2csXpmFIXwPzyLCDIQPhHyTKeO5exi/WYJHBjZhnBUugEBT1fjbzYS693mG8feNG2UCdN5Ow
-UaWcfWK+poBEmPJQyB3/X6Wkfrj9PY4qPidbyGXhcIY6xtlfYwOHufW7d8ToKavG6//mDL9y1pC
-AXYzbvyGIZzFbOsuoxiUt4WMG/AxOZ4BLyiKqblNrddnkXHjTRCsQHRQIDAQABo1AwTjAdBgNVH
-Q4EFgQURE4qR1jYuUiR9k/OdKkdMpqNjekwHwYDVR0jBBgwFoAURE4qR1jYuUiR9k/OdKkdMpqN
-jekwDAYDVR0TBAUwAwEB/zANBgkqhkiG9w0BAQUFAAOCAQEAP8gmoG5cBUB5oZipM95odIXurrc
-cM1mwEd6f9E/T61EJfUd+blGF9FTNg5glsbqwV+yT2xLi7FFJepZzm8iWbYWM0+E8+jLiWAx3bY
-cMNAGqMKl24MDn214b6RAwpOAJSSa5WM1aB+VQdd6aO/ZTfrFTXkUnTxfjCDOyUAq79PwllyneQ
-XUw+nc4qmWKc0/qEXvrfBdgJw68PnZS2IvtGvjrN7sR/a5wFwr+4K0Gsx9pinIEwsAzC9YvY0wz
-ERS4YjaIxQNlARmj7wC7bw6S/zQcodYx0Fxen5l9x8q9fHIL9Fylfm4EqNKZLFEBFP6iSPB+voQ
-NtNPi8w593ov1Mw==
------END CERTIFICATE-----