[Telemetry refactor] Drop "2" from method calls to JS API

tools/perf/page_sets/system_health/blank_stories.py

Index: tools/perf/page_sets/system_health/blank_stories.py
diff --git a/tools/perf/page_sets/system_health/blank_stories.py b/tools/perf/page_sets/system_health/blank_stories.py
index 24866b0bf20623f17ca14fb5de64763bea4087ec..ffe0eccf0836c7361b43a7609799fef16ad520df 100644
--- a/tools/perf/page_sets/system_health/blank_stories.py
+++ b/tools/perf/page_sets/system_health/blank_stories.py
@@ -14,7 +14,7 @@ class BlankAboutBlankStory(system_health_story.SystemHealthStory):
   def _DidLoadDocument(self, action_runner):
     # Request a RAF and wait for it to be processed to ensure that the metric
     # Startup.FirstWebContents.NonEmptyPaint2 is recorded.
-    action_runner.ExecuteJavaScript2(
+    action_runner.ExecuteJavaScript(
         """
         window.__hasRunRAF = false;
         requestAnimationFrame(function() {
@@ -22,4 +22,4 @@ class BlankAboutBlankStory(system_health_story.SystemHealthStory):
         });
         """
     )
-    action_runner.WaitForJavaScriptCondition2("window.__hasRunRAF")
+    action_runner.WaitForJavaScriptCondition("window.__hasRunRAF")