[Sheriff] Disable two ResetFirstAfterBootTestWithRollback tests

Tests disabled due to flaky failures at

https://ci.chromium.org/p/chromium/builders/ci/Linux%20Chromium%20OS%20ASan%20LSan%20Tests%20%281%29/36521

Bug: 990362
Change-Id: I8a75c46e1868152216fe3cd34a579805fca871f1
NoTry: True
Tbr: antrim@chromium.org, rsorokin@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1982923Reviewed-by: Xiaocheng Hu <xiaochengh@chromium.org>
Commit-Queue: Xiaocheng Hu <xiaochengh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#727631}

chrome/browser/chromeos/login/reset_browsertest.cc

@@ -449,12 +449,9 @@ IN_PROC_BROWSER_TEST_F(ResetFirstAfterBootTestWithRollback,
 }
 
 // TODO(http://crbug.com/990362): Times out on MSAN buildbots.
-#if defined(MEMORY_SANITIZER)
-#define MAYBE_RollbackAvailable DISABLED_RollbackAvailable
-#else
-#define MAYBE_RollbackAvailable RollbackAvailable
-#endif
-IN_PROC_BROWSER_TEST_F(ResetFirstAfterBootTestWithRollback, RollbackAvailable) {
+// TODO(http://crbug.com/990362): Flaky failures.
+IN_PROC_BROWSER_TEST_F(ResetFirstAfterBootTestWithRollback,
+                       DISABLED_RollbackAvailable) {
   PrefService* prefs = g_browser_process->local_state();
 
   // PRE test triggers start with Reset screen.
@@ -553,13 +550,9 @@ IN_PROC_BROWSER_TEST_F(ResetFirstAfterBootTestWithRollback,
 }
 
 // TODO(http://crbug.com/1025926): Times out on MSAN buildbots.
-#if defined(MEMORY_SANITIZER)
-#define MAYBE_RevertAfterCancel DISABLED_RevertAfterCancel
-#else
-#define MAYBE_RevertAfterCancel RevertAfterCancel
-#endif
+// TODO(http://crbug.com/990362): Flaky failures.
 IN_PROC_BROWSER_TEST_F(ResetFirstAfterBootTestWithRollback,
-                       MAYBE_RevertAfterCancel) {
+                       DISABLED_RevertAfterCancel) {
   OobeScreenWaiter(ResetView::kScreenId).Wait();
   EXPECT_TRUE(login_prompt_visible_observer_->signal_emitted());