Disable flaky AboutFlagsBrowserTest.OriginFlagEnabled

TBR=meacer

Bug: 1010678
Change-Id: Iebd944e30415975bfef89c793a900cb5dfce6339
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1852250Reviewed-by: David Roger <droger@chromium.org>
Commit-Queue: David Roger <droger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#704594}

chrome/browser/about_flags_browsertest.cc

@@ -239,7 +239,8 @@ IN_PROC_BROWSER_TEST_P(AboutFlagsBrowserTest, PRE_OriginFlagEnabled) {
             GetOriginListText(contents, kSwitchName));
 }
 
-IN_PROC_BROWSER_TEST_P(AboutFlagsBrowserTest, OriginFlagEnabled) {
+// Flaky. http://crbug.com/1010678
+IN_PROC_BROWSER_TEST_P(AboutFlagsBrowserTest, DISABLED_OriginFlagEnabled) {
 #if !defined(OS_CHROMEOS)
   // On non-ChromeOS, the command line is modified after restart.
   EXPECT_EQ(