Don't hide the error bubble when switching to the import overlay.

The import overlay has been moved to a higher level than
the create profile overlay, so we want to keep the state.

BUG=343723

Review URL: https://codereview.chromium.org/177413010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255059 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 255059