Now CHECKs to make sure we log out before clearing the token db

chrome/browser/signin/signin_manager.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/signin/signin_manager.h"
 
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 38 matching lines @@
       had_two_factor_error_(false) {
 }
 
 SigninManager::~SigninManager() {}
 
 void SigninManager::Initialize(Profile* profile) {
   // Should never call Initialize() twice.
   DCHECK(!IsInitialized());
   profile_ = profile;
 
+  // If the user is clearing the token service from the command line, then
+  // clear their login info also (not valid to be logged in without any
+  // tokens).
+  CommandLine* cmd_line = CommandLine::ForCurrentProcess();
+  if (cmd_line->HasSwitch(switches::kClearTokenService))
+    profile->GetPrefs()->ClearPref(prefs::kGoogleServicesUsername);
+
   std::string user = profile_->GetPrefs()->GetString(
       prefs::kGoogleServicesUsername);
   if (!user.empty())
     SetAuthenticatedUsername(user);
   // TokenService can be null for unit tests.
   TokenService* token_service = TokenServiceFactory::GetForProfile(profile_);
   if (token_service) {
     token_service->Initialize(GaiaConstants::kChromeSource, profile_);
     if (!authenticated_username_.empty()) {
       token_service->LoadTokensFromDB();
@@ skipping 329 matching lines @@
                                               profile_->GetRequestContext()));
     }
 
     client_login_->StartMergeSession(tok_details->token());
 
     // We only want to do this once per sign-in.
     CleanupNotificationRegistration();
   }
 #endif
 }