Don't focus the location bar for NTP navigations in non-selected tabs.

BUG=677716
TEST=See bug for repro steps.

Review-Url: https://codereview.chromium.org/2624373002
Cr-Commit-Position: refs/heads/master@{#443338}
void Browser::VisibleSecurityStateChanged(WebContents* source) {
  DCHECK(source);
  if (tab_strip_model_->GetActiveWebContents() == source)
    UpdateToolbar(false);

  SecurityStateTabHelper* helper =
      SecurityStateTabHelper::FromWebContents(source);
  helper->VisibleSecurityStateChanged();
}

void Browser::VisibleSecurityStateChanged(WebContents* source) {
  DCHECK(source);
  if (tab_strip_model_->GetActiveWebContents() == source)
    UpdateToolbar(false);

  SecurityStateTabHelper* helper =
      SecurityStateTabHelper::FromWebContents(source);
  helper->VisibleSecurityStateChanged();
}
