Adding missing browser/ui/views/find_bar_host_aura.cc

TBR=ben@chromium.org
BUG=97131
TEST=none


Review URL: http://codereview.chromium.org/8136026

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@104056 0039d316-1c4b-4281-b951-d872f2087c98