Abstracted language switch logic to its model class.

BUG=37070
TEST=none

Review URL: http://codereview.chromium.org/1596007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@43711 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index 08bc4ae..01ebacb 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -386,6 +386,8 @@
         'browser/chromeos/login/google_authenticator.h',
         'browser/chromeos/login/pam_google_authenticator.cc',
         'browser/chromeos/login/pam_google_authenticator.h',
+        'browser/chromeos/login/language_switch_model.cc',
+        'browser/chromeos/login/language_switch_model.h',
         'browser/chromeos/login/login_manager_view.cc',
         'browser/chromeos/login/login_manager_view.h',
         'browser/chromeos/login/login_status_consumer.h',