If a page calls |window.focus()|, kick it out of fullscreen.

BUG=776418, 800056

Change-Id: I1880fe600e4814c073f247c43b1c1ac80c8fc017
Reviewed-on: https://chromium-review.googlesource.com/852378
Reviewed-by: Nasko Oskov <nasko@chromium.org>
Reviewed-by: Philip Jägenstedt <foolip@chromium.org>
Commit-Queue: Avi Drissman <avi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#533790}
void RenderViewImpl::ConvertWindowToViewport(blink::WebFloatRect* rect) {
  RenderWidget::ConvertWindowToViewport(rect);
}

void RenderViewImpl::ConvertWindowToViewport(blink::WebFloatRect* rect) {
  RenderWidget::ConvertWindowToViewport(rect);
}
