Disable CrSettingsResetPageTest.All on Linux/Chrome OS due to flake.

Remove from SingleProcessMash filter file since it doesn't seem related
to Mash.

Bug: 873884
Change-Id: I70dacb5b97fc650046b3d9f87eab8694dd6b0015
Reviewed-on: https://chromium-review.googlesource.com/c/1323900Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Evan Stade <estade@chromium.org>
Cr-Commit-Position: refs/heads/master@{#606151}

chrome/test/data/webui/settings/cr_settings_browsertest.js

@@ -587,7 +587,14 @@ CrSettingsResetPageTest.prototype = {
   ]),
 };
 
-TEST_F('CrSettingsResetPageTest', 'All', function() {
+// Disabling on Linux (desktop and Chrome OS) due to flakiness.
+// https://crbug.com/873884
+GEN('#if defined(OS_LINUX)');
+GEN('#define MAYBE_ResetPageAll DISABLED_All');
+GEN('#else');
+GEN('#define MAYBE_ResetPageAll All');
+GEN('#endif');
+TEST_F('CrSettingsResetPageTest', 'MAYBE_ResetPageAll', function() {
   mocha.run();
 });
 

testing/buildbot/filters/chromeos.single_process_mash.browser_tests.filter

@@ -33,9 +33,6 @@
 -ChromeSessionManagerTest.LoginExistingUsers
 -ChromeSessionManagerTest.PRE_LoginExistingUsers
 
-# Flaky (regardless of Mash). https://crbug.com/873884
--CrSettingsResetPageTest.All
-
 # Failing on ASAN bot. crbug.com/882631
 -ExtensionWebRequestApiTest.WebRequestTypes