Introduce a layering in the invalidation component as public and impl

components/invalidation/invalidation_service_test_template.cc

Index: components/invalidation/invalidation_service_test_template.cc
diff --git a/components/invalidation/invalidation_service_test_template.cc b/components/invalidation/invalidation_service_test_template.cc
deleted file mode 100644
index 3205c6f0155ce3b4941fa089cbdce7d8745c757b..0000000000000000000000000000000000000000
--- a/components/invalidation/invalidation_service_test_template.cc
+++ /dev/null
@@ -1,27 +0,0 @@
-// Copyright 2014 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 "components/invalidation/invalidation_service_test_template.h"
-
-namespace internal {
-
-BoundFakeInvalidationHandler::BoundFakeInvalidationHandler(
-    const invalidation::InvalidationService& invalidator)
-    : invalidator_(invalidator),
-      last_retrieved_state_(syncer::DEFAULT_INVALIDATION_ERROR) {}
-
-BoundFakeInvalidationHandler::~BoundFakeInvalidationHandler() {}
-
-syncer::InvalidatorState
-BoundFakeInvalidationHandler::GetLastRetrievedState() const {
-  return last_retrieved_state_;
-}
-
-void BoundFakeInvalidationHandler::OnInvalidatorStateChange(
-    syncer::InvalidatorState state) {
-  FakeInvalidationHandler::OnInvalidatorStateChange(state);
-  last_retrieved_state_ = invalidator_.GetInvalidatorState();
-}
-
-}  // namespace internal