Refactored update view to separate update UI and logic between view class (UI) and screen class (logic).
BUG=37070
TEST=Make out/Debug/chrome. Run chrome --login-manager --login-screen=update. Press escape. Update should cancel. On the actual hardware when connected to corpnet, update should succeed and proceed to the login screen.
Review URL: http://codereview.chromium.org/1591015

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@43837 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index 9ea3307..6ebaa57 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -403,6 +403,8 @@
         'browser/chromeos/login/rounded_rect_painter.cc',
         'browser/chromeos/login/rounded_rect_painter.h',
         'browser/chromeos/login/screen_observer.h',
+	'browser/chromeos/login/update_screen.cc',
+	'browser/chromeos/login/update_screen.h',
         'browser/chromeos/login/update_view.cc',
         'browser/chromeos/login/update_view.h',
         'browser/chromeos/login/user_controller.cc',