[Telemetry] Kill PageTest.DidRunActions hook.

tools/perf/measurements/v8_gc_times.py

Index: tools/perf/measurements/v8_gc_times.py
diff --git a/tools/perf/measurements/v8_gc_times.py b/tools/perf/measurements/v8_gc_times.py
index ebb36f405d3da7fbc802dcf6fe1f1907bb1dcd12..01e2d0175848f9f9e3ff0cf3e0393d1b58c95562 100644
--- a/tools/perf/measurements/v8_gc_times.py
+++ b/tools/perf/measurements/v8_gc_times.py
@@ -23,7 +23,6 @@ class V8GCTimes(page_test.PageTest):
 
   def __init__(self):
     super(V8GCTimes, self).__init__()
-    self._renderer_process = None
 
   def WillNavigateToPage(self, page, tab):
     category_filter = tracing_category_filter.TracingCategoryFilter()
@@ -37,14 +36,11 @@ class V8GCTimes(page_test.PageTest):
     tab.browser.platform.tracing_controller.Start(
         options, category_filter, self._TIME_OUT_IN_SECONDS)
 
-  def DidRunActions(self, page, tab):
+  def ValidateAndMeasurePage(self, page, tab, results):
     trace_data = tab.browser.platform.tracing_controller.Stop()
     timeline_model = TimelineModel(trace_data)
-
-    self._renderer_process = timeline_model.GetRendererProcessFromTabId(tab.id)
-
-  def ValidateAndMeasurePage(self, page, tab, results):
-    self._AddV8MetricsToResults(self._renderer_process, results)
+    renderer_process = timeline_model.GetRendererProcessFromTabId(tab.id)
+    self._AddV8MetricsToResults(renderer_process, results)
 
   def _AddV8MetricsToResults(self, process, results):
     if process is None: