sync: don't allow NULL profile in ProfileSyncService and friends

chrome/browser/sync/profile_sync_service_mock.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 "base/prefs/pref_service.h"
 #include "base/prefs/testing_pref_store.h"
 #include "chrome/browser/signin/profile_oauth2_token_service.h"
 #include "chrome/browser/signin/profile_oauth2_token_service_factory.h"
 #include "chrome/browser/signin/signin_manager_factory.h"
 #include "chrome/browser/sync/profile_sync_service_mock.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/test/base/testing_profile.h"
 
-ProfileSyncServiceMock::ProfileSyncServiceMock()
-    : ProfileSyncService(
-          NULL,
-          NULL,
-          NULL,
-          NULL,
-          ProfileSyncService::MANUAL_START) {}
-
 ProfileSyncServiceMock::ProfileSyncServiceMock(Profile* profile)
     : ProfileSyncService(
           NULL,
           profile,
           NULL,
           ProfileOAuth2TokenServiceFactory::GetForProfile(profile),
           ProfileSyncService::MANUAL_START) {}
 
 ProfileSyncServiceMock::~ProfileSyncServiceMock() {
 }
@@ skipping 13 matching lines @@
 
 ScopedVector<browser_sync::DeviceInfo>
     ProfileSyncServiceMock::GetAllSignedInDevices() const {
   ScopedVector<browser_sync::DeviceInfo> devices;
   std::vector<browser_sync::DeviceInfo*>* device_vector =
       GetAllSignedInDevicesMock();
   devices.get() = *device_vector;
   return devices.Pass();
 }