Disable ProxyBrowserTest.BasicAuthWSConnect on more platforms.

Disable the test on Windows and Mac

Tbr: mmenke@chromium.org
Bug: 822614, 828927
Change-Id: Ia9437af60a80ab7468e20dc81e495aa10a893428
Reviewed-on: https://chromium-review.googlesource.com/996405Reviewed-by: Owen Min <zmin@chromium.org>
Commit-Queue: Owen Min <zmin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#548183}

chrome/browser/net/proxy_browsertest.cc

@@ -112,7 +112,7 @@ class ProxyBrowserTest : public InProcessBrowserTest {
 // We bypass manually installed proxy for localhost on chromeos.
 // TODO(crbug.com/822614): Flaky on Windows Debug and ASAN bots.
 #if (defined(OS_CHROMEOS) || defined(ADDRESS_SANITIZER) || \
-     (defined(OS_WIN) && !defined(NDEBUG)))
+     defined(OS_WIN) || defined(OS_MACOSX))
 #define MAYBE_BasicAuthWSConnect DISABLED_BasicAuthWSConnect
 #else
 #define MAYBE_BasicAuthWSConnect BasicAuthWSConnect