Cleanup interaction creation and add ExecuteJavaScript to action_runner.py

tools/perf/page_sets/top_25.py

Index: tools/perf/page_sets/top_25.py
diff --git a/tools/perf/page_sets/top_25.py b/tools/perf/page_sets/top_25.py
index 9fead4bf2ff0f4341f86805a8ace25344a4f76b6..3b615c6a750ed1dbf29e781fb6ee648e5ac0d35d 100644
--- a/tools/perf/page_sets/top_25.py
+++ b/tools/perf/page_sets/top_25.py
@@ -205,16 +205,13 @@ class GoogleCalendarPage(Top25Page):
         'condition': 'element',
         'selector': 'div[class~="navForward"]'
       }))
-    action_runner.RunAction(JavascriptAction(
-      {
-        'expression': '''
-          (function() {
-            var elem = document.createElement('meta');
-            elem.name='viewport';
-            elem.content='initial-scale=1';
-            document.body.appendChild(elem);
-          })();'''
-      }))
+    action_runner.ExecuteJavaScript('''
+        (function() {
+          var elem = document.createElement('meta');
+          elem.name='viewport';
+          elem.content='initial-scale=1';
+          document.body.appendChild(elem);
+        })();''')
     action_runner.RunAction(WaitAction(
       {
         'seconds': 1