[Telemetry] Disable some tests on Nexus 5X reference

tools/perf/benchmarks/blink_style.py

Index: tools/perf/benchmarks/blink_style.py
diff --git a/tools/perf/benchmarks/blink_style.py b/tools/perf/benchmarks/blink_style.py
index d37d44af675db65aef025f1679b1197edf915bfb..60b31c5bb8c0f6b8766fcad36ae96b9a4041565c 100644
--- a/tools/perf/benchmarks/blink_style.py
+++ b/tools/perf/benchmarks/blink_style.py
@@ -31,6 +31,11 @@ class BlinkStyleKeyMobileSites(perf_benchmark.PerfBenchmark):
   page_set = page_sets.KeyMobileSitesPageSet
 
   @classmethod
+  def ShouldDisable(cls, possible_browser):  # http://crbug.com/593152
+    return (possible_browser.browser_type == 'reference' and
+            possible_browser.platform.GetDeviceTypeName() == 'Nexus 5X')
+
+  @classmethod
   def Name(cls):
     return 'blink_style.key_mobile_sites'