Index: tools/perf/page_sets/tough_ad_cases.py |
diff --git a/tools/perf/page_sets/tough_ad_cases.py b/tools/perf/page_sets/tough_ad_cases.py |
index f076f6a4f5f2ef6fd9accbba9e543f5b248d6d20..41d79d6299dde1c8c1f27159227b298f1337be0d 100644 |
--- a/tools/perf/page_sets/tough_ad_cases.py |
+++ b/tools/perf/page_sets/tough_ad_cases.py |
@@ -25,6 +25,8 @@ class SwiffyPage(page_module.Page): |
'var meta = document.createElement("meta");' |
'meta.name = "viewport";' |
'meta.content = "width=device-width";' |
+ 'if (!document.getElementsByTagName("head"))' |
+ ' document.body.appendChild(document.createElement("head"));' |
'document.getElementsByTagName("head")[0].appendChild(meta);') |
action_runner.EvaluateJavaScript(viewport_js) |