Convert ECDSA tests to GTest.

BUG=129

Change-Id: Ia8b0639489fea817be4bb24f0457629f0fd6a815
Reviewed-on: https://boringssl-review.googlesource.com/16947
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
diff --git a/sources.cmake b/sources.cmake
index 36ef7f7..f795c51 100644
--- a/sources.cmake
+++ b/sources.cmake
@@ -40,6 +40,8 @@
   crypto/ecdh/ecdh_tests.txt
   crypto/fipsmodule/aes/aes_tests.txt
   crypto/fipsmodule/bn/bn_tests.txt
+  crypto/fipsmodule/ecdsa/ecdsa_sign_tests.txt
+  crypto/fipsmodule/ecdsa/ecdsa_verify_tests.txt
   crypto/fipsmodule/modes/gcm_tests.txt
   crypto/fipsmodule/rand/ctrdrbg_vectors.txt
   crypto/hmac_extra/hmac_tests.txt