net_unittests: Re-enable HTTPSOCSPVerifyTest.VerifyResult on macOS

The test got disabled but it was apparently just flaky due to the general
vpython test_server flake on macOS (crbug.com/869227), so re-enable it.

Bug: 949958
Change-Id: Iebd8088eaeda5009f7234a6fbaa039d3b7a7814a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1784165
Reviewed-by: Ryan Sleevi <rsleevi@chromium.org>
Commit-Queue: Matt Mueller <mattm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#693329}

net/url_request/url_request_unittest.cc

@@ -11862,13 +11862,7 @@ class HTTPSOCSPVerifyTest
     : public HTTPSOCSPTest,
       public testing::WithParamInterface<OCSPVerifyTestData> {};
 
-// TODO(crbug.com/949958): The test is flaky on Mac
-#if defined(OS_MACOSX)
-#define MAYBE_VerifyResult DISABLED_VerifyResult
-#else
-#define MAYBE_VerifyResult VerifyResult
-#endif
-TEST_P(HTTPSOCSPVerifyTest, MAYBE_VerifyResult) {
+TEST_P(HTTPSOCSPVerifyTest, VerifyResult) {
   SpawnedTestServer::SSLOptions ssl_options(
       SpawnedTestServer::SSLOptions::CERT_AUTO);
   OCSPVerifyTestData test = GetParam();