cros: Break BaseScreenHandler into two classes.

chrome/browser/ui/webui/chromeos/login/hid_detection_screen_handler.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 "chrome/browser/ui/webui/chromeos/login/hid_detection_screen_handler.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
@@ skipping 12 matching lines @@
 namespace {
 
 const char kJsScreenPath[] = "login.HIDDetectionScreen";
 
 }  // namespace
 
 namespace chromeos {
 
 HIDDetectionScreenHandler::HIDDetectionScreenHandler(
     CoreOobeView* core_oobe_view)
-    : core_oobe_view_(core_oobe_view) {
+    : BaseScreenHandler(kScreenId), core_oobe_view_(core_oobe_view) {
   set_call_js_prefix(kJsScreenPath);
 }
 
 HIDDetectionScreenHandler::~HIDDetectionScreenHandler() {
   if (screen_)
     screen_->OnViewDestroyed(this);
 }
 
 void HIDDetectionScreenHandler::Show() {
   if (!page_is_ready()) {
     show_on_init_ = true;
     return;
   }
   core_oobe_view_->InitDemoModeDetection();
 
   PrefService* local_state = g_browser_process->local_state();
   int num_of_times_dialog_was_shown = local_state->GetInteger(
       prefs::kTimesHIDDialogShown);
   local_state->SetInteger(prefs::kTimesHIDDialogShown,
                           num_of_times_dialog_was_shown + 1);
 
-  ShowScreen(OobeScreen::SCREEN_OOBE_HID_DETECTION);
+  ShowScreen(kScreenId);
 }
 
 void HIDDetectionScreenHandler::Hide() {
 }
 
 void HIDDetectionScreenHandler::Bind(HIDDetectionScreen* screen) {
   screen_ = screen;
   BaseScreenHandler::SetBaseScreen(screen_);
   if (page_is_ready())
     Initialize();
@@ skipping 47 matching lines @@
   if (screen_)
     screen_->OnContinueButtonClicked();
 }
 
 // static
 void HIDDetectionScreenHandler::RegisterPrefs(PrefRegistrySimple* registry) {
   registry->RegisterIntegerPref(prefs::kTimesHIDDialogShown, 0);
 }
 
 }  // namespace chromeos