Added Sign In button to Guest pod.

BUG=chromium-os:7161
TEST=Verify that clicking on Guest entry now selects it and clicking on Sign In button goes to Guest mode. Verify that keyboard navigation works as expected.

Review URL: http://codereview.chromium.org/3547015

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@61641 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index a841567b..3ccef48 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -532,6 +532,8 @@
         'browser/chromeos/login/existing_user_view.h',
         'browser/chromeos/login/google_authenticator.cc',
         'browser/chromeos/login/google_authenticator.h',
+        'browser/chromeos/login/guest_user_view.cc',
+        'browser/chromeos/login/guest_user_view.h',
         'browser/chromeos/login/help_app_launcher.cc',
         'browser/chromeos/login/help_app_launcher.h',
         'browser/chromeos/login/helper.cc',