Only notify V8 once per timezone change

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 6200b3480aa2e5a38f255e3c412fc817cb30a73f..99518d9b26a4649c8214f6055d9e0387167901a3 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -592,7 +592,7 @@ void RenderFrameImpl::OnNavigate(const FrameMsg_Navigate_Params& params) {
     // We refresh timezone when a view is swapped in since timezone
     // can get out of sync when the system timezone is updated while
     // the view is swapped out.
-    RenderViewImpl::NotifyTimezoneChange(render_view_->webview()->mainFrame());
+    RenderViewImpl::NotifyTimezoneChange();
 
     render_view_->SetSwappedOut(false);
     is_swapped_out_ = false;