Permits opening foreign session in background tab.

* Removed DCHECK what forbade opening foreign session in a background
  tab.

BUG=321458

Review URL: https://codereview.chromium.org/109443002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239724 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 239724
[rAc] [OSX] Give dots in loading animation ellipsis spacing.

BUG=325521
TEST=When the rAc dialog is loading Wallet details, dots have a spacing like an
     ellipsis.

R=groby@chromium.org

Review URL: https://codereview.chromium.org/109473002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239725 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 239725