Fix passing pointers between processes.

BUG=31880
Review URL: http://codereview.chromium.org/558036

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@37555 0039d316-1c4b-4281-b951-d872f2087c98
void WebPluginDelegateProxy::OnInvalidateRect(const gfx::Rect& rect) {
  if (!plugin_)
    return;

  invalidate_pending_ = true;
  CopyFromTransportToBacking(rect);
  plugin_->InvalidateRect(rect);
 }

void WebPluginDelegateProxy::OnInvalidateRect(const gfx::Rect& rect) {
  if (!plugin_)
    return;

  invalidate_pending_ = true;
  CopyFromTransportToBacking(rect);
  plugin_->InvalidateRect(rect);
 }
