Allow signin to continue even if sync is disabled by policy.

chrome/browser/sync/test/integration/sync_test.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/sync/test/integration/sync_test.h"
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
@@ skipping 283 matching lines @@
 void SyncTest::InitializeInstance(int index) {
   profiles_[index] = MakeProfile(
       base::StringPrintf(FILE_PATH_LITERAL("Profile%d"), index));
   EXPECT_FALSE(GetProfile(index) == NULL) << "Could not create Profile "
                                           << index << ".";
 
   browsers_[index] = new Browser(Browser::CreateParams(GetProfile(index)));
   EXPECT_FALSE(GetBrowser(index) == NULL) << "Could not create Browser "
                                           << index << ".";
 
+  // Make sure the ProfileSyncService has been created before creating the
+  // ProfileSyncServiceHarness - some tests expect the ProfileSyncService to
+  // already exist.
+  ProfileSyncServiceFactory::GetForProfile(GetProfile(index));
+
   clients_[index] = new ProfileSyncServiceHarness(GetProfile(index),
                                                   username_,
                                                   password_);
   EXPECT_FALSE(GetClient(index) == NULL) << "Could not create Client "
                                          << index << ".";
 
   ui_test_utils::WaitForBookmarkModelToLoad(
       BookmarkModelFactory::GetForProfile(GetProfile(index)));
   ui_test_utils::WaitForHistoryToLoad(HistoryServiceFactory::GetForProfile(
       GetProfile(index), Profile::EXPLICIT_ACCESS));
@@ skipping 520 matching lines @@
 
 void SyncTest::SetProxyConfig(net::URLRequestContextGetter* context_getter,
                               const net::ProxyConfig& proxy_config) {
   base::WaitableEvent done(false, false);
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&SetProxyConfigCallback, &done,
                  make_scoped_refptr(context_getter), proxy_config));
   done.Wait();
 }