Omnibox Refresh: Fix focus ring hide behavior when popup opens

This CL ensures that the focus ring is shown/hidden properly when the
popup is opened/closed by scheduling a paint operation when the popup
opens and closes.

Bug: 823535
Change-Id: I19303bebc5b64a91f3497d3898e805a81dbacf31
Reviewed-on: https://chromium-review.googlesource.com/1091187
Commit-Queue: Tommy Li <tommycli@chromium.org>
Reviewed-by: Bret Sepulveda <bsep@chromium.org>
Reviewed-by: Justin Donnelly <jdonnelly@chromium.org>
Cr-Commit-Position: refs/heads/master@{#565776}

chrome/browser/ui/views/location_bar/location_bar_view.cc

@@ -1230,6 +1230,10 @@ void LocationBarView::OnChanged() {
 
 void LocationBarView::OnPopupVisibilityChanged() {
   RefreshBackground();
+
+  // The focus ring may be hidden or shown when the popup visibility changes.
+  if (focus_ring_)
+    focus_ring_->SchedulePaint();
 }
 
 const ToolbarModel* LocationBarView::GetToolbarModel() const {