Disable power.gpu_rasterization.typical_10_mobile on Nexus 9

tools/perf/benchmarks/power.py

Index: tools/perf/benchmarks/power.py
diff --git a/tools/perf/benchmarks/power.py b/tools/perf/benchmarks/power.py
index 1047cab5803c84c3e8c6bbe65494c4ecec637c37..10c94618ebf1245be61542a7f70817f0b61132bd 100644
--- a/tools/perf/benchmarks/power.py
+++ b/tools/perf/benchmarks/power.py
@@ -102,10 +102,18 @@ class PowerGpuRasterizationTypical10Mobile(perf_benchmark.PerfBenchmark):
 
   @classmethod
   def ShouldDisable(cls, possible_browser):
-     # http://crbug.com/563968, http://crbug.com/593973
-    return (cls.IsSvelte(possible_browser) or
-      (possible_browser.browser_type ==  'reference' and
-       possible_browser.platform.GetDeviceTypeName() == 'Nexus 5X'))
+    # http://crbug.com/563968
+    if cls.IsSvelte(possible_browser):
+      return True
+
+
+    # http://crbug.com/593973
+    if (possible_browser.browser_type ==  'reference' and
+        possible_browser.platform.GetDeviceTypeName() == 'Nexus 5X'):
+      return True
+
+    # http://crbug.com/671631
+    return possible_browser.platform.GetDeviceTypeName() == 'Nexus 9'
 
 
 @benchmark.Enabled('mac')