telemetry: separated stats collection from metrics calculation.

tools/perf/measurements/smoothness.py

Index: tools/perf/measurements/smoothness.py
diff --git a/tools/perf/measurements/smoothness.py b/tools/perf/measurements/smoothness.py
index 71070b19978abc1c5b7e97cdeb17ead87718d12e..8098cc0cd83e6c30555be9216bb9b889f7c60a3b 100644
--- a/tools/perf/measurements/smoothness.py
+++ b/tools/perf/measurements/smoothness.py
@@ -3,6 +3,7 @@
 # found in the LICENSE file.
 from metrics import loading
 from metrics import smoothness
+from metrics.gpu_rendering_stats import GpuRenderingStats
 from telemetry.page import page_measurement
 
 class DidNotScrollException(page_measurement.MeasurementFailure):
@@ -59,11 +60,9 @@ class Smoothness(page_measurement.PageMeasurement):
     loading.AddResultsForTab(tab, results)
 
     smoothness.CalcFirstPaintTimeResults(results, tab)
-    smoothness.CalcScrollResults(rendering_stats_deltas, results)
-    smoothness.CalcTextureUploadResults(rendering_stats_deltas, results)
-    smoothness.CalcImageDecodingResults(rendering_stats_deltas, results)
-    smoothness.CalcAnalysisResults(rendering_stats_deltas, results)
-    smoothness.CalcLatencyResults(rendering_stats_deltas, results)
+
+    benchmark_stats = GpuRenderingStats(rendering_stats_deltas)
+    smoothness.CalcResults(benchmark_stats, results)
 
     if self.options.report_all_results:
       for k, v in rendering_stats_deltas.iteritems():