Refactor kiosk app launch to be part of login screen UI flow.

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

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h"
 
 #include "base/callback.h"
 #include "base/chromeos/chromeos_version.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 834 matching lines @@
               &SigninScreenHandler::HandleLoginUIStateChanged);
   AddCallback("unlockOnLoginSuccess",
               &SigninScreenHandler::HandleUnlockOnLoginSuccess);
   AddCallback("frameLoadingCompleted",
               &SigninScreenHandler::HandleFrameLoadingCompleted);
   AddCallback("showLoadingTimeoutError",
               &SigninScreenHandler::HandleShowLoadingTimeoutError);
   AddCallback("updateOfflineLogin",
               &SigninScreenHandler::HandleUpdateOfflineLogin);
   AddCallback("focusPod", &SigninScreenHandler::HandleFocusPod);
+
+  // This message is sent by the kiosk app menu, but is handled here
+  // so we can tell the delegate to launch the app.
+  AddCallback("launchKioskApp", &SigninScreenHandler::HandleLaunchKioskApp);
 }
 
 void SigninScreenHandler::RegisterPrefs(PrefRegistrySimple* registry) {
   registry->RegisterDictionaryPref(prefs::kUsersLRUInputMethod);
 }
 
 void SigninScreenHandler::HandleGetUsers() {
   SendUserList(false);
 }
 
@@ skipping 754 matching lines @@
 }
 
 void SigninScreenHandler::HandleUpdateOfflineLogin(bool offline_login_active) {
   offline_login_active_ = offline_login_active;
 }
 
 void SigninScreenHandler::HandleFocusPod(const std::string& user_id) {
   SetUserInputMethod(user_id);
 }
 
+void SigninScreenHandler::HandleLaunchKioskApp(const std::string& app_id) {
+  delegate_->LoginAsKioskApp(app_id);
+}
+
 void SigninScreenHandler::StartClearingDnsCache() {
   if (dns_clear_task_running_ || !g_browser_process->io_thread())
     return;
 
   dns_cleared_ = false;
   BrowserThread::PostTaskAndReply(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&ClearDnsCache, g_browser_process->io_thread()),
       base::Bind(&SigninScreenHandler::OnDnsCleared,
                  weak_factory_.GetWeakPtr()));
@@ skipping 117 matching lines @@
   rvh->ExecuteJavascriptInWebFrame(
       ASCIIToUTF16("//iframe[@id='signin-frame']\n//iframe"),
       ASCIIToUTF16(code));
 
   // Test properties are cleared in HandleCompleteLogin because the form
   // submission might fail and login will not be attempted after reloading
   // if they are cleared here.
 }
 
 }  // namespace chromeos