Mark SSLUITest.TestOKHTTPS as not flaky

The flakes are from 2011 and don't seem to be happening anymore. De-flake
the test.

BUG=91684

Review-Url: https://codereview.chromium.org/2864493002
Cr-Commit-Position: refs/heads/master@{#469440}

chrome/browser/ssl/ssl_browser_tests.cc

@@ -889,15 +889,8 @@ IN_PROC_BROWSER_TEST_F(SSLUITest, TestBrokenHTTPSMetricsReporting_DontProceed) {
       security_interstitials::MetricsHelper::TOTAL_VISITS, 1);
 }
 
-// http://crbug.com/91745
-#if defined(OS_CHROMEOS)
-#define MAYBE_TestOKHTTPS DISABLED_TestOKHTTPS
-#else
-#define MAYBE_TestOKHTTPS TestOKHTTPS
-#endif
-
 // Visits a page over OK https:
-IN_PROC_BROWSER_TEST_F(SSLUITest, MAYBE_TestOKHTTPS) {
+IN_PROC_BROWSER_TEST_F(SSLUITest, TestOKHTTPS) {
   ASSERT_TRUE(https_server_.Start());
 
   ui_test_utils::NavigateToURL(browser(),