UMA: How often are different network error screens encountered during OOBE

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 <algorithm>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 11 matching lines @@
 #include "base/strings/utf_string_conversions.h"
 #include "base/sys_info.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/browser_process_platform_part_chromeos.h"
 #include "chrome/browser/browser_shutdown.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/chromeos/app_mode/kiosk_app_manager.h"
 #include "chrome/browser/chromeos/boot_times_loader.h"
 #include "chrome/browser/chromeos/input_method/input_method_util.h"
 #include "chrome/browser/chromeos/kiosk_mode/kiosk_mode_settings.h"
+#include "chrome/browser/chromeos/login/error_screens_histogram_helper.h"
 #include "chrome/browser/chromeos/login/hwid_checker.h"
 #include "chrome/browser/chromeos/login/lock/screen_locker.h"
 #include "chrome/browser/chromeos/login/screens/core_oobe_actor.h"
 #include "chrome/browser/chromeos/login/ui/login_display_host.h"
 #include "chrome/browser/chromeos/login/ui/login_display_host_impl.h"
 #include "chrome/browser/chromeos/login/ui/webui_login_display.h"
 #include "chrome/browser/chromeos/login/users/multi_profile_user_controller.h"
 #include "chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.h"
 #include "chrome/browser/chromeos/login/wizard_controller.h"
 #include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
@@ skipping 227 matching lines @@
       error_screen_actor_(error_screen_actor),
       core_oobe_actor_(core_oobe_actor),
       is_first_update_state_call_(true),
       offline_login_active_(false),
       last_network_state_(NetworkStateInformer::UNKNOWN),
       has_pending_auth_ui_(false),
       caps_lock_enabled_(chromeos::input_method::InputMethodManager::Get()
                              ->GetImeKeyboard()
                              ->CapsLockIsEnabled()),
       gaia_screen_handler_(gaia_screen_handler),
+      histogram_helper_(new ErrorScreensHistogramHelper("Signin")),
       weak_factory_(this) {
   DCHECK(network_state_informer_.get());
   DCHECK(error_screen_actor_);
   DCHECK(core_oobe_actor_);
   DCHECK(gaia_screen_handler_);
   gaia_screen_handler_->SetSigninScreenHandler(this);
   network_state_informer_->AddObserver(this);
 
   registrar_.Add(this,
                  chrome::NOTIFICATION_AUTH_NEEDED,
@@ skipping 143 matching lines @@
   if (is_enrolling_consumer_management_) {
     // We don't check if the value of the owner e-mail is trusted because it is
     // only used to pre-fill the e-mail field in Gaia sign-in page and a cached
     // value is sufficient.
     CrosSettings::Get()->GetString(kDeviceOwner, &email);
   } else {
     email = context.email();
   }
   gaia_screen_handler_->PopulateEmail(email);
   ShowImpl();
+  histogram_helper_->OnScreenShow();
 }
 
 void SigninScreenHandler::ShowRetailModeLoginSpinner() {
   CallJS("showLoginSpinner");
 }
 
 void SigninScreenHandler::SetDelegate(SigninScreenHandlerDelegate* delegate) {
   delegate_ = delegate;
   if (delegate_)
     delegate_->SetWebUIHandler(this);
@@ skipping 224 matching lines @@
       error_screen_actor_->error_state() !=
       ErrorScreen::ERROR_STATE_AUTH_EXT_TIMEOUT;
   error_screen_actor_->AllowOfflineLogin(offline_login_allowed);
 
   if (GetCurrentScreen() != OobeUI::SCREEN_ERROR_MESSAGE) {
     base::DictionaryValue params;
     const std::string network_type = network_state_informer_->network_type();
     params.SetString("lastNetworkType", network_type);
     error_screen_actor_->SetUIState(ErrorScreen::UI_STATE_SIGNIN);
     error_screen_actor_->Show(OobeUI::SCREEN_GAIA_SIGNIN, &params);
+    histogram_helper_->OnErrorShow(error_screen_actor_->error_state());
   }
 }
 
 void SigninScreenHandler::HideOfflineMessage(
     NetworkStateInformer::State state,
     ErrorScreenActor::ErrorReason reason) {
   if (!IsSigninScreenHiddenByError())
     return;
 
   error_screen_actor_->Hide();
+  histogram_helper_->OnErrorHide();
 
   // Forces a reload for Gaia screen on hiding error message.
   if (IsGaiaVisible() || IsGaiaHiddenByError())
     ReloadGaia(false);
 }
 
 void SigninScreenHandler::ReloadGaia(bool force_reload) {
   gaia_screen_handler_->ReloadGaia(force_reload);
 }
 
@@ skipping 780 matching lines @@
   return gaia_screen_handler_->frame_error();
 }
 
 void SigninScreenHandler::OnCapsLockChanged(bool enabled) {
   caps_lock_enabled_ = enabled;
   if (page_is_ready())
     CallJS("login.AccountPickerScreen.setCapsLockState", caps_lock_enabled_);
 }
 
 }  // namespace chromeos