[Sync] Add support for enabling session sync remotely.

chrome/browser/sync/glue/sync_backend_host_unittest.cc

 // Copyright (c) 2011 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/glue/sync_backend_host.h"
 
 #include <cstddef>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
@@ skipping 24 matching lines @@
   MOCK_METHOD2(OnBackendInitialized, void(const WeakHandle<JsBackend>&, bool));
   MOCK_METHOD0(OnSyncCycleCompleted, void());
   MOCK_METHOD0(OnAuthError, void());
   MOCK_METHOD0(OnStopSyncingPermanently, void());
   MOCK_METHOD0(OnClearServerDataSucceeded, void());
   MOCK_METHOD0(OnClearServerDataFailed, void());
   MOCK_METHOD1(OnPassphraseRequired, void(sync_api::PassphraseRequiredReason));
   MOCK_METHOD0(OnPassphraseAccepted, void());
   MOCK_METHOD1(OnEncryptionComplete, void(const syncable::ModelTypeSet&));
   MOCK_METHOD1(OnMigrationNeededForTypes, void(const syncable::ModelTypeSet&));
+  MOCK_METHOD1(OnDataTypesChanged, void(const syncable::ModelTypeSet&));
 };
 
 }  // namespace
 
 class SyncBackendHostTest : public TestingBrowserProcessTest {
  protected:
   SyncBackendHostTest()
       : ui_thread_(BrowserThread::UI, &ui_loop_),
         io_thread_(BrowserThread::IO) {}
 
@@ skipping 49 matching lines @@
                      GURL(k_mock_url),
                      syncable::ModelTypeSet(),
                      credentials,
                      true);
   backend.Shutdown(false);
 }
 
 // TODO(akalin): Write more SyncBackendHost unit tests.
 
 }  // namespace browser_sync