[Sync] Fix namespaces for the browser_sync component.

chrome/browser/signin/signin_ui_util.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/signin/signin_ui_util.h"
 
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 48 matching lines @@
     SyncGlobalError* error = SyncGlobalErrorFactory::GetForProfile(profile);
     if (error && error->HasMenuItem())
       errors.push_back(error);
   }
 #endif
 
   return errors;
 }
 
 // If a signed in service is reporting an error, returns the GlobalError
-// object associated with that service, or NULL if no errors are reported.
+// object associated with that service, or null if no errors are reported.
 GlobalError* GetSignedInServiceError(Profile* profile) {
   std::vector<GlobalError*> errors = GetSignedInServiceErrors(profile);
   if (errors.empty())
-    return NULL;
+    return nullptr;
   return errors[0];
 }
 
 }  // namespace
 
 base::string16 GetSigninMenuLabel(Profile* profile) {
   GlobalError* error = signin_ui_util::GetSignedInServiceError(profile);
   if (error)
     return error->MenuItemLabel();
 
   // No errors, so just display the signed in user, if any.
-  ProfileSyncService* service = profile->IsSyncAllowed() ?
-      ProfileSyncServiceFactory::GetForProfile(profile) : NULL;
+  browser_sync::ProfileSyncService* service =
+      profile->IsSyncAllowed()
+          ? ProfileSyncServiceFactory::GetForProfile(profile)
+          : nullptr;
 
   // Even if the user is signed in, don't display the "signed in as..."
   // label if we're still setting up sync.
   if (!service || !service->IsFirstSetupInProgress()) {
     std::string username;
     SigninManagerBase* signin_manager =
         SigninManagerFactory::GetForProfileIfExists(profile);
     if (signin_manager)
       username = signin_manager->GetAuthenticatedAccountInfo().email;
     if (!username.empty() && !signin_manager->AuthInProgress()) {
@@ skipping 90 matching lines @@
   std::string email = account_tracker->GetAccountInfo(account_id).email;
   if (email.empty()) {
     DCHECK_EQ(AccountTrackerService::MIGRATION_NOT_STARTED,
               account_tracker->GetMigrationState());
     return account_id;
   }
   return email;
 }
 
 }  // namespace signin_ui_util