Migrate call sites LoginDisplayHostImpl::default_host to LoginDisplayHost.

chrome/browser/chromeos/login/login_ui_keyboard_browsertest.cc

 // Copyright 2014 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 "base/command_line.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/input_method/input_method_persistence.h"
 #include "chrome/browser/chromeos/language_preferences.h"
 #include "chrome/browser/chromeos/login/login_manager_test.h"
 #include "chrome/browser/chromeos/login/startup_utils.h"
 #include "chrome/browser/chromeos/login/test/oobe_screen_waiter.h"
-#include "chrome/browser/chromeos/login/ui/login_display_host_impl.h"
+#include "chrome/browser/chromeos/login/ui/login_display_host.h"
 #include "chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h"
 #include "chrome/common/pref_names.h"
 #include "chromeos/chromeos_switches.h"
 #include "content/public/test/test_utils.h"
 
 namespace chromeos {
 
 namespace {
 
 const char kTestUser1[] = "test-user1@gmail.com";
@@ skipping 41 matching lines @@
       return;
     runner_->Run();
     GetOobeUI()
         ->signin_screen_handler_for_test()
         ->SetFocusPODCallbackForTesting(base::Closure());
     runner_ = NULL;
   }
 
  private:
   OobeUI* GetOobeUI() {
-    OobeUI* oobe_ui =
-        static_cast<chromeos::LoginDisplayHostImpl*>(
-            chromeos::LoginDisplayHostImpl::default_host())->GetOobeUI();
+    OobeUI* oobe_ui = LoginDisplayHost::default_host()->GetOobeUI();
     CHECK(oobe_ui);
     return oobe_ui;
   }
 
   bool focused_;
 
   scoped_refptr<content::MessageLoopRunner> runner_;
 };
 
 }  // anonymous namespace
@@ skipping 184 matching lines @@
   // Switch back.
   js_checker().Evaluate("$('gaia-signin').cancel()");
   OobeScreenWaiter(OobeDisplay::SCREEN_ACCOUNT_PICKER).Wait();
 
   EXPECT_EQ(expected_input_methods,
             input_method::InputMethodManager::Get()
                 ->GetActiveIMEState()
                 ->GetActiveInputMethodIds());
 }
 }  // namespace chromeos