Inherit CSP when we inherit the security origin

This prevents attacks that use main window navigation to get out of the
existing csp constraints such as the related bug

Bug: 747847
Change-Id: I1e57b50da17f65d38088205b0a3c7c49ef2ae4d8
Reviewed-on: https://chromium-review.googlesource.com/592027
Reviewed-by: Mike West <mkwst@chromium.org>
Commit-Queue: Andy Paicu <andypaicu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#492333}
void WebLocalFrameImpl::SetTickmarks(const WebVector<WebRect>& tickmarks) {
  if (GetFrameView()) {
    Vector<IntRect> tickmarks_converted(tickmarks.size());
    for (size_t i = 0; i < tickmarks.size(); ++i)
      tickmarks_converted[i] = tickmarks[i];
    GetFrameView()->SetTickmarks(tickmarks_converted);
  }
}

void WebLocalFrameImpl::SetTickmarks(const WebVector<WebRect>& tickmarks) {
  if (GetFrameView()) {
    Vector<IntRect> tickmarks_converted(tickmarks.size());
    for (size_t i = 0; i < tickmarks.size(); ++i)
      tickmarks_converted[i] = tickmarks[i];
    GetFrameView()->SetTickmarks(tickmarks_converted);
  }
}
