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::UpdateTargetURL(WebContents* source, const GURL& url) {
  if (!GetStatusBubble())
    return;

  if (source == tab_strip_model_->GetActiveWebContents())
    GetStatusBubble()->SetURL(url);
}

void Browser::UpdateTargetURL(WebContents* source, const GURL& url) {
  if (!GetStatusBubble())
    return;

  if (source == tab_strip_model_->GetActiveWebContents())
    GetStatusBubble()->SetURL(url);
}
