Report only one input latency metric mean_input_event_latency

tools/perf/measurements/smoothness_unittest.py

Index: tools/perf/measurements/smoothness_unittest.py
diff --git a/tools/perf/measurements/smoothness_unittest.py b/tools/perf/measurements/smoothness_unittest.py
index 0aba865864526e571a2f55ad2f02051b2b2e1904..55cd39edb91fddf0c4caf0e3a3987b906506fce2 100644
--- a/tools/perf/measurements/smoothness_unittest.py
+++ b/tools/perf/measurements/smoothness_unittest.py
@@ -106,19 +106,12 @@ class SmoothnessUnitTest(
     self.assertEquals(len(mostly_smooth), 1)
     self.assertGreaterEqual(mostly_smooth[0].GetRepresentativeNumber(), 0)
 
-    mean_mouse_wheel_latency = results.FindAllPageSpecificValuesNamed(
-        'mean_mouse_wheel_latency')
-    if mean_mouse_wheel_latency:
-      self.assertEquals(len(mean_mouse_wheel_latency), 1)
+    mean_input_event_latency = results.FindAllPageSpecificValuesNamed(
+        'mean_input_event_latency')
+    if mean_input_event_latency:
+      self.assertEquals(len(mean_input_event_latency), 1)
       self.assertGreater(
-          mean_mouse_wheel_latency[0].GetRepresentativeNumber(), 0)
-
-    mean_touch_scroll_latency = results.FindAllPageSpecificValuesNamed(
-        'mean_touch_scroll_latency')
-    if mean_touch_scroll_latency:
-      self.assertEquals(len(mean_touch_scroll_latency), 1)
-      self.assertGreater(
-          mean_touch_scroll_latency[0].GetRepresentativeNumber(), 0)
+          mean_input_event_latency[0].GetRepresentativeNumber(), 0)
 
   def testSmoothnessForPageWithNoGesture(self):
     ps = self.CreateEmptyPageSet()