Disable flaky SingleSampleMetricsFactoryImplTest.MultithreadedMetrics test

components/metrics/single_sample_metrics_factory_impl_unittest.cc

Index: components/metrics/single_sample_metrics_factory_impl_unittest.cc
diff --git a/components/metrics/single_sample_metrics_factory_impl_unittest.cc b/components/metrics/single_sample_metrics_factory_impl_unittest.cc
index 0ef75be789851849150efcea49c5b78823994600..d87d3fd1ee6442b6253eab0544a517b567f57102 100644
--- a/components/metrics/single_sample_metrics_factory_impl_unittest.cc
+++ b/components/metrics/single_sample_metrics_factory_impl_unittest.cc
@@ -131,7 +131,13 @@ TEST_F(SingleSampleMetricsFactoryImplTest, DefaultSingleSampleMetricWithValue) {
       base::HistogramBase::kUmaTargetedHistogramFlag));
 }
 
-TEST_F(SingleSampleMetricsFactoryImplTest, MultithreadedMetrics) {
+// Flaky on Android N5X builders. https://crbug.com/719497
+#if defined(OS_ANDROID)
+#define MAYBE_MultithreadedMetrics DISABLED_MultithreadedMetrics
+#else
+#define MAYBE_MultithreadedMetrics MultithreadedMetrics
+#endif
+TEST_F(SingleSampleMetricsFactoryImplTest, MAYBE_MultithreadedMetrics) {
   base::HistogramTester tester;
   std::unique_ptr<base::SingleSampleMetric> metric =
       factory_->CreateCustomCountsMetric(kMetricName, kMin, kMax, kBucketCount);