Only notify V8 once per timezone change

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index 296fce9e06f6a6751b3725844e23a1704727bbc1..d12b0eec19add34c0e888c19b4b55f7173662cd6 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -379,13 +379,8 @@ Referrer RenderViewImpl::GetReferrerFromRequest(
 }
 
 // static
-void RenderViewImpl::NotifyTimezoneChange(blink::WebFrame* frame) {
-  v8::HandleScope handle_scope(v8::Isolate::GetCurrent());
-  v8::Context::Scope context_scope(frame->mainWorldScriptContext());
+void RenderViewImpl::NotifyTimezoneChange() {
   v8::Date::DateTimeConfigurationChangeNotification(v8::Isolate::GetCurrent());
-  blink::WebFrame* child = frame->firstChild();
-  for (; child; child = child->nextSibling())
-    NotifyTimezoneChange(child);
 }
 
 // static
@@ -3778,8 +3773,7 @@ void RenderViewImpl::OnUpdateWebPreferences(const WebPreferences& prefs) {
 }
 
 void RenderViewImpl::OnUpdateTimezone() {
-  if (webview())
-    NotifyTimezoneChange(webview()->mainFrame());
+  NotifyTimezoneChange();
 }
 
 void RenderViewImpl::OnEnumerateDirectoryResponse(