signin: pull basic SigninManager functionality into new SigninManagerBase class.

chrome/browser/sync/sync_global_error_unittest.cc

Index: chrome/browser/sync/sync_global_error_unittest.cc
diff --git a/chrome/browser/sync/sync_global_error_unittest.cc b/chrome/browser/sync/sync_global_error_unittest.cc
index 021e3674f5200df4e85e7bec6f7356c2017d593e..6abddb4a2fa3a8ebd66fc3b108dd9fad46907b82 100644
--- a/chrome/browser/sync/sync_global_error_unittest.cc
+++ b/chrome/browser/sync/sync_global_error_unittest.cc
@@ -159,7 +159,8 @@ TEST_F(SyncGlobalErrorTest, PassphraseGlobalError) {
   scoped_ptr<Profile> profile(
       ProfileSyncServiceMock::MakeSignedInTestingProfile());
   NiceMock<ProfileSyncServiceMock> service(profile.get());
-  SigninManager* signin = SigninManagerFactory::GetForProfile(profile.get());
+  SigninManagerBase* signin =
+      SigninManagerFactory::GetForProfile(profile.get());
   FakeLoginUIService* login_ui_service = static_cast<FakeLoginUIService*>(
       LoginUIServiceFactory::GetInstance()->SetTestingFactoryAndUse(
           profile.get(), BuildMockLoginUIService));