Get net_unittests working on Windows BoringSSL port.

BUG=338884

Review URL: https://codereview.chromium.org/687833002

Cr-Commit-Position: refs/heads/master@{#302161}
diff --git a/net/net.gypi b/net/net.gypi
index 7f4f33b..e3068be 100644
--- a/net/net.gypi
+++ b/net/net.gypi
@@ -77,6 +77,8 @@
       'cert/ct_verify_result.h',
       'cert/pem_tokenizer.cc',
       'cert/pem_tokenizer.h',
+      'cert/sha256_legacy_support_nss_win.cc',
+      'cert/sha256_legacy_support_openssl_win.cc',
       'cert/sha256_legacy_support_win.cc',
       'cert/sha256_legacy_support_win.h',
       'cert/signed_certificate_timestamp.cc',