[cleanup] Removed embedded sign-in support code from OOBE.

chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.cc

Index: chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.cc
diff --git a/chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.cc b/chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.cc
index 2944e329ebfde6adbbbfb6d865dbdac0d55a413a..af7eed7a43ce5b3ac8e973d252c759bf532c4f8d 100644
--- a/chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.cc
+++ b/chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.cc
@@ -175,7 +175,6 @@ GaiaScreenHandler::GaiaScreenHandler(
       using_saml_api_(false),
       is_enrolling_consumer_management_(false),
       test_expects_complete_login_(false),
-      embedded_signin_enabled_by_shortcut_(false),
       use_easy_bootstrap_(false),
       signin_screen_handler_(NULL),
       weak_factory_(this) {
@@ -278,12 +277,6 @@ void GaiaScreenHandler::LoadGaia(const GaiaContext& context) {
     params.SetString("gaiaEndpoint", command_line->GetSwitchValueASCII(
                                          switches::kGaiaEndpointChromeOS));
   }
-  if (context.embedded_signin_enabled) {
-    params.SetBoolean("useEmbedded", true);
-    // We set 'constrained' here to switch troubleshooting page on embedded
-    // signin to full tab.
-    params.SetInteger("constrained", 1);
-  }
 
   if (use_easy_bootstrap_) {
     params.SetBoolean("useEafe", true);
@@ -328,22 +321,6 @@ void GaiaScreenHandler::ReloadGaia(bool force_reload) {
   CallJS("doReload");
 }
 
-void GaiaScreenHandler::SwitchToEmbeddedSignin() {
-  // This feature should not be working on Stable,Beta images.
-  chrome::VersionInfo::Channel channel = chrome::VersionInfo::GetChannel();
-  if (channel == chrome::VersionInfo::CHANNEL_STABLE ||
-      channel == chrome::VersionInfo::CHANNEL_BETA) {
-    return;
-  }
-  embedded_signin_enabled_by_shortcut_ = true;
-  LoadAuthExtension(
-      true /* force */, true /* silent_load */, false /* offline */);
-}
-
-void GaiaScreenHandler::CancelEmbeddedSignin() {
-  embedded_signin_enabled_by_shortcut_ = false;
-}
-
 void GaiaScreenHandler::DeclareLocalizedValues(
     ::login::LocalizedValuesBuilder* builder) {
   builder->Add("signinScreenTitle", IDS_SIGNIN_SCREEN_TITLE);
@@ -393,7 +370,6 @@ void GaiaScreenHandler::RegisterMessages() {
   AddCallback("scrapedPasswordVerificationFailed",
               &GaiaScreenHandler::HandleScrapedPasswordVerificationFailed);
   AddCallback("loginWebuiReady", &GaiaScreenHandler::HandleGaiaUIReady);
-  AddCallback("switchToFullTab", &GaiaScreenHandler::HandleSwitchToFullTab);
   AddCallback("toggleWebviewSignin",
               &GaiaScreenHandler::HandleToggleWebviewSignin);
   AddCallback("toggleEasyBootstrap",
@@ -505,10 +481,6 @@ void GaiaScreenHandler::HandleScrapedPasswordVerificationFailed() {
   RecordSAMLScrapingVerificationResultInHistogram(false);
 }
 
-void GaiaScreenHandler::HandleSwitchToFullTab() {
-  CallJS("switchToFullTab");
-}
-
 void GaiaScreenHandler::HandleToggleWebviewSignin() {
   if (StartupUtils::EnableWebviewSignin(
         !StartupUtils::IsWebviewSigninEnabled())) {
@@ -836,11 +808,6 @@ void GaiaScreenHandler::LoadAuthExtension(bool force,
     context.has_users = !Delegate()->GetUsers().empty();
   }
 
-  context.embedded_signin_enabled =
-      base::CommandLine::ForCurrentProcess()->HasSwitch(
-          chromeos::switches::kEnableEmbeddedSignin) ||
-      embedded_signin_enabled_by_shortcut_;
-
   populated_email_.clear();
 
   LoadGaia(context);