Disable tests for UKMTestCase

Bug: 806784
Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: I687c994bc89696eed93f58f93621740b0fc3c37e
Reviewed-on: https://chromium-review.googlesource.com/891234
Commit-Queue: Louis Romero <lpromero@chromium.org>
Reviewed-by: Louis Romero <lpromero@chromium.org>
Cr-Commit-Position: refs/heads/master@{#532435}

ios/chrome/browser/metrics/ukm_egtest.mm

@@ -298,7 +298,13 @@ void SignOut() {
 // //chrome/browser/metrics/ukm_browsertest.cc
 
 // Make sure that UKM is disabled while an incognito tab is open.
-- (void)testRegularPlusIncognito {
+// TODO(crbug.com/806784): Re-enable this test on devices.
+#if TARGET_OS_SIMULATOR
+#define MAYBE_testRegularPlusIncognito testRegularPlusIncognito
+#else
+#define MAYBE_testRegularPlusIncognito FLAKY_testRegularPlusIncognito
+#endif
+- (void)MAYBE_testRegularPlusIncognito {
   uint64_t original_client_id = metrics::UkmEGTestHelper::client_id();
 
   OpenNewIncognitoTab();
@@ -323,7 +329,13 @@ void SignOut() {
 }
 
 // Make sure opening a real tab after Incognito doesn't enable UKM.
-- (void)testIncognitoPlusRegular {
+// TODO(crbug.com/806784): Re-enable this test on devices.
+#if TARGET_OS_SIMULATOR
+#define MAYBE_testIncognitoPlusRegular testIncognitoPlusRegular
+#else
+#define MAYBE_testIncognitoPlusRegular FLAKY_testIncognitoPlusRegular
+#endif
+- (void)MAYBE_testIncognitoPlusRegular {
   uint64_t original_client_id = metrics::UkmEGTestHelper::client_id();
   chrome_test_util::CloseAllTabs();
   [ChromeEarlGrey waitForMainTabCount:(0)];
@@ -347,7 +359,13 @@ void SignOut() {
 // testOpenNonSync not needed, since there can't be multiple profiles.
 
 // Make sure that UKM is disabled when metrics consent is revoked.
-- (void)testMetricsConsent {
+// TODO(crbug.com/806784): Re-enable this test on devices.
+#if TARGET_OS_SIMULATOR
+#define MAYBE_testMetricsConsent testMetricsConsent
+#else
+#define MAYBE_testMetricsConsent FLAKY_testMetricsConsent
+#endif
+- (void)MAYBE_testMetricsConsent {
   uint64_t original_client_id = metrics::UkmEGTestHelper::client_id();
 
   UpdateMetricsConsent(false);
@@ -363,7 +381,13 @@ void SignOut() {
 }
 
 // Make sure that providing metrics consent doesn't enable UKM w/o sync.
-- (void)testConsentAddedButNoSync {
+// TODO(crbug.com/806784): Re-enable this test on devices.
+#if TARGET_OS_SIMULATOR
+#define MAYBE_testConsentAddedButNoSync testConsentAddedButNoSync
+#else
+#define MAYBE_testConsentAddedButNoSync FLAKY_testConsentAddedButNoSync
+#endif
+- (void)MAYBE_testConsentAddedButNoSync {
   SignOut();
   UpdateMetricsConsent(false);
   AssertUKMEnabled(false);
@@ -376,7 +400,13 @@ void SignOut() {
 }
 
 // Make sure that UKM is disabled when sync is disabled.
-- (void)testSingleDisableSync {
+// TODO(crbug.com/806784): Re-enable this test on devices.
+#if TARGET_OS_SIMULATOR
+#define MAYBE_testSingleDisableSync testSingleDisableSync
+#else
+#define MAYBE_testSingleDisableSync FLAKY_testSingleDisableSync
+#endif
+- (void)MAYBE_testSingleDisableSync {
   uint64_t original_client_id = metrics::UkmEGTestHelper::client_id();
 
   [ChromeEarlGreyUI openSettingsMenu];
@@ -425,7 +455,13 @@ void SignOut() {
 // TODO(crbug.com/793082): Implement testSecondaryPassphrase.
 
 // Make sure that UKM is disabled when sync is not enabled.
-- (void)testSingleSyncSignout {
+// TODO(crbug.com/806784): Re-enable this test on devices.
+#if TARGET_OS_SIMULATOR
+#define MAYBE_testSingleSyncSignout testSingleSyncSignout
+#else
+#define MAYBE_testSingleSyncSignout FLAKY_testSingleSyncSignout
+#endif
+- (void)MAYBE_testSingleSyncSignout {
   uint64_t original_client_id = metrics::UkmEGTestHelper::client_id();
 
   SignOut();
@@ -448,7 +484,13 @@ void SignOut() {
 
 // testMetricsReporting not needed, since iOS doesn't use sampling.
 
-- (void)testHistoryDelete {
+// TODO(crbug.com/806784): Re-enable this test on devices.
+#if TARGET_OS_SIMULATOR
+#define MAYBE_testHistoryDelete testHistoryDelete
+#else
+#define MAYBE_testHistoryDelete FLAKY_testHistoryDelete
+#endif
+- (void)MAYBE_testHistoryDelete {
   uint64_t original_client_id = metrics::UkmEGTestHelper::client_id();
 
   const ukm::SourceId kDummySourceId = 0x54321;