Revert of Move some sync/notifier to components/invalidation

sync/notifier/fake_invalidation_handler.h

Index: sync/notifier/fake_invalidation_handler.h
diff --git a/sync/notifier/fake_invalidation_handler.h b/sync/notifier/fake_invalidation_handler.h
new file mode 100644
index 0000000000000000000000000000000000000000..4203e6276749cd4a7c2dcf3786c3d0c61c4f70e4
--- /dev/null
+++ b/sync/notifier/fake_invalidation_handler.h
@@ -0,0 +1,42 @@
+// 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.
+
+#ifndef SYNC_NOTIFIER_FAKE_SYNC_NOTIFIER_OBSERVER_H_
+#define SYNC_NOTIFIER_FAKE_SYNC_NOTIFIER_OBSERVER_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "sync/notifier/invalidation_handler.h"
+#include "sync/notifier/object_id_invalidation_map.h"
+
+namespace syncer {
+
+class FakeInvalidationHandler : public InvalidationHandler {
+ public:
+  FakeInvalidationHandler();
+  virtual ~FakeInvalidationHandler();
+
+  InvalidatorState GetInvalidatorState() const;
+  const ObjectIdInvalidationMap& GetLastInvalidationMap() const;
+  int GetInvalidationCount() const;
+
+  // InvalidationHandler implementation.
+  virtual void OnInvalidatorStateChange(InvalidatorState state) OVERRIDE;
+  virtual void OnIncomingInvalidation(
+      const ObjectIdInvalidationMap& invalidation_map) OVERRIDE;
+  virtual std::string GetOwnerName() const OVERRIDE;
+
+ private:
+  InvalidatorState state_;
+  ObjectIdInvalidationMap last_invalidation_map_;
+  int invalidation_count_;
+
+  DISALLOW_COPY_AND_ASSIGN(FakeInvalidationHandler);
+};
+
+}  // namespace syncer
+
+#endif  // SYNC_NOTIFIER_FAKE_SYNC_NOTIFIER_OBSERVER_H_