Disable SingleClientWalletSyncTest.SameUpdatesAreIgnored on ASan/TSan

The test is disabled due to high flakiness.

TBR: treib@chromium.org
Bug: 997912
Change-Id: Ifa5e1cc89354163622a6a6ca593498c6fe3a6028
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1771974
Commit-Queue: Jan Krcal <jkrcal@chromium.org>
Reviewed-by: Marc Treib <treib@chromium.org>
Reviewed-by: Jan Krcal <jkrcal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#690763}

chrome/browser/sync/test/integration/single_client_wallet_sync_test.cc

@@ -611,7 +611,14 @@ IN_PROC_BROWSER_TEST_F(SingleClientWalletSyncTest,
 
 // If the server sends the same cards and addresses again, they should not
 // change on the client. We should also not overwrite existing metadata.
-IN_PROC_BROWSER_TEST_F(SingleClientWalletSyncTest, SameUpdatesAreIgnored) {
+// Flaky on ASan/TSan only. http://crbug.com/997912
+#if defined(ADDRESS_SANITIZER) || defined(THREAD_SANITIZER)
+#define MAYBE_SameUpdatesAreIgnored DISABLED_SameUpdatesAreIgnored
+#else
+#define MAYBE_SameUpdatesAreIgnored SameUpdatesAreIgnored
+#endif
+IN_PROC_BROWSER_TEST_F(SingleClientWalletSyncTest,
+                       MAYBE_SameUpdatesAreIgnored) {
   GetFakeServer()->SetWalletData(
       {CreateSyncWalletCard(/*name=*/"card-1", /*last_four=*/"0001",
                             kDefaultBillingAddressID),