Disable flaky SuspiciousSiteTriggerTest.ReportRejectedByTriggerManager

TBR=drubery@chromium.org

Bug: 1011197
Change-Id: Ice7d23afd629d392a3d3b8df037ccb21834ad75c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1839274Reviewed-by: Yoichi Osato <yoichio@chromium.org>
Commit-Queue: Yoichi Osato <yoichio@chromium.org>
Auto-Submit: Yoichi Osato <yoichio@chromium.org>
Cr-Commit-Position: refs/heads/master@{#702695}

components/safe_browsing/triggers/suspicious_site_trigger_unittest.cc

@@ -274,7 +274,7 @@ TEST_F(SuspiciousSiteTriggerTest, SuspiciousHitAfterLoad) {
   ExpectNoReportRejection();
 }
 
-TEST_F(SuspiciousSiteTriggerTest, ReportRejectedByTriggerManager) {
+TEST_F(SuspiciousSiteTriggerTest, DISABLED_ReportRejectedByTriggerManager) {
   // If the trigger manager rejects the report then no report is sent.
   CreateTrigger(/*monitor_mode=*/false);