Disable LoadTimingBrowserTest.HTTPS for ChromeOS LACROSS

Bug: 1128033
Change-Id: I23c0817a99bd03ae38087174f09ea1bf3aff6da4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2606631
Auto-Submit: Thomas Lukaszewicz <tluk@chromium.org>
Commit-Queue: John Abd-El-Malek <jam@chromium.org>
Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Cr-Commit-Position: refs/heads/master@{#839776}

chrome/browser/net/load_timing_browsertest.cc

@@ -134,7 +134,7 @@ IN_PROC_BROWSER_TEST_F(LoadTimingBrowserTest, HTTP) {
 }
 
 // TODO(crbug.com/1128033): Flaky on ChromeOS and Mac.
-#if BUILDFLAG(IS_CHROMEOS_ASH) || defined(OS_MAC)
+#if defined(OS_CHROMEOS) || defined(OS_MAC)
 #define MAYBE_HTTPS DISABLED_HTTPS
 #else
 #define MAYBE_HTTPS HTTPS