Chromium build failed with heap leak checker, or configured with

chrome/browser/sync/profile_sync_service.cc

 // Copyright (c) 2010 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/sync/profile_sync_service.h"
 
 #include <map>
 #include <set>
 
 #include "app/l10n_util.h"
@@ skipping 539 matching lines @@
     case syncable::BOOKMARKS:
       return prefs::kSyncBookmarks;
     case syncable::PASSWORDS:
       return prefs::kSyncPasswords;
     case syncable::PREFERENCES:
       return prefs::kSyncPreferences;
     case syncable::AUTOFILL:
       return prefs::kSyncAutofill;
     case syncable::AUTOFILL_PROFILE:
       return prefs::kSyncAutofillProfile;
-      break;
     case syncable::THEMES:
       return prefs::kSyncThemes;
     case syncable::TYPED_URLS:
       return prefs::kSyncTypedUrls;
     case syncable::EXTENSIONS:
       return prefs::kSyncExtensions;
     case syncable::APPS:
       return prefs::kSyncApps;
     case syncable::SESSIONS:
       return prefs::kSyncSessions;
     default:
-      NOTREACHED();
-      return NULL;
+      break;
   }
+  NOTREACHED();
+  return NULL;
 }
 
 // An invariant has been violated.  Transition to an error state where we try
 // to do as little work as possible, to avoid further corruption or crashes.
 void ProfileSyncService::OnUnrecoverableError(
     const tracked_objects::Location& from_here,
     const std::string& message) {
   unrecoverable_error_detected_ = true;
   unrecoverable_error_message_ = message;
   unrecoverable_error_location_.reset(
@@ skipping 631 matching lines @@
   // is initialized, all enabled data types are consistent with one
   // another, and no unrecoverable error has transpired.
   if (unrecoverable_error_detected_)
     return false;
 
   if (!data_type_manager_.get())
     return false;
 
   return data_type_manager_->state() == DataTypeManager::CONFIGURED;
 }