Enrollment recovery: Add UMA stats.

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

 // Copyright (c) 2012 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/enrollment_screen_handler.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/compiler_specific.h"
+#include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_util.h"
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/browsing_data/browsing_data_helper.h"
 #include "chrome/browser/browsing_data/browsing_data_remover.h"
 #include "chrome/browser/chromeos/login/ui/login_display_host_impl.h"
 #include "chrome/browser/chromeos/policy/policy_oauth2_token_fetcher.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/webui/chromeos/login/authenticated_user_email_retriever.h"
@@ skipping 19 matching lines @@
 
 // Start page of GAIA authentication extension.
 const char kGaiaExtStartPage[] =
     "chrome-extension://mfffpogegjflfpflabcdkioaeobkgjik/main.html";
 
 // Enrollment step names.
 const char kEnrollmentStepSignin[] = "signin";
 const char kEnrollmentStepSuccess[] = "success";
 
 // Enrollment mode strings.
-const char kEnrollmentModeManual[] = "manual";
-const char kEnrollmentModeForced[] = "forced";
-const char kEnrollmentModeAuto[] = "auto";
+const char* const kModeStrings[EnrollmentScreenActor::ENROLLMENT_MODE_COUNT] =
+    { "manual", "forced", "auto", "recovery" };
 
 std::string EnrollmentModeToString(EnrollmentScreenActor::EnrollmentMode mode) {
-  switch (mode) {
-    case EnrollmentScreenActor::ENROLLMENT_MODE_MANUAL:
-      return kEnrollmentModeManual;
-    case EnrollmentScreenActor::ENROLLMENT_MODE_FORCED:
-      return kEnrollmentModeForced;
-    case EnrollmentScreenActor::ENROLLMENT_MODE_AUTO:
-      return kEnrollmentModeAuto;
-    default:
-      NOTREACHED() << "Bad enrollment mode " << mode;
-  }
-
-  return kEnrollmentModeManual;
+  CHECK(0 <= mode && mode < EnrollmentScreenActor::ENROLLMENT_MODE_COUNT);
+  return kModeStrings[mode];
 }
 
 // A helper class that takes care of asynchronously revoking a given token.
 class TokenRevoker : public GaiaAuthConsumer {
  public:
   TokenRevoker()
       : gaia_fetcher_(this,
                       GaiaConstants::kChromeOSSource,
                       g_browser_process->system_request_context()) {}
   virtual ~TokenRevoker() {}
@@ skipping 520 matching lines @@
   screen_data.SetString("signin_url", kGaiaExtStartPage);
   screen_data.SetString("gaiaUrl", GaiaUrls::GetInstance()->gaia_url().spec());
   screen_data.SetString("enrollment_mode",
                         EnrollmentModeToString(enrollment_mode_));
   screen_data.SetString("management_domain", management_domain_);
 
   ShowScreen(OobeUI::kScreenOobeEnrollment, &screen_data);
 }
 
 }  // namespace chromeos