Introduce a layering in the invalidation component as public and impl

components/invalidation/p2p_invalidation_service.h

Index: components/invalidation/p2p_invalidation_service.h
diff --git a/components/invalidation/p2p_invalidation_service.h b/components/invalidation/p2p_invalidation_service.h
deleted file mode 100644
index c0096e4557ebf0b4f43df04b194d047385fc7f43..0000000000000000000000000000000000000000
--- a/components/invalidation/p2p_invalidation_service.h
+++ /dev/null
@@ -1,69 +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 "base/callback_forward.h"
-#include "base/memory/ref_counted.h"
-#include "base/threading/non_thread_safe.h"
-#include "components/invalidation/invalidation_service.h"
-#include "components/invalidation/p2p_invalidator.h"
-#include "components/keyed_service/core/keyed_service.h"
-
-#ifndef COMPONENTS_INVALIDATION_P2P_INVALIDATION_SERVICE_H_
-#define COMPONENTS_INVALIDATION_P2P_INVALIDATION_SERVICE_H_
-
-namespace net {
-class URLRequestContextGetter;
-}
-
-namespace syncer {
-class P2PInvalidator;
-}
-
-namespace invalidation {
-
-class InvalidationLogger;
-
-// This service is a wrapper around P2PInvalidator.  Unlike other
-// InvalidationServices, it can both send and receive invalidations.  It is used
-// only in tests, where we're unable to connect to a real invalidations server.
-class P2PInvalidationService : public base::NonThreadSafe,
-                               public InvalidationService {
- public:
-  P2PInvalidationService(
-      scoped_ptr<IdentityProvider> identity_provider,
-      const scoped_refptr<net::URLRequestContextGetter>& request_context,
-      syncer::P2PNotificationTarget notification_target);
-  ~P2PInvalidationService() override;
-
-  // InvalidationService implementation.
-  // It is an error to have registered handlers when the service is destroyed.
-  void RegisterInvalidationHandler(
-      syncer::InvalidationHandler* handler) override;
-  bool UpdateRegisteredInvalidationIds(syncer::InvalidationHandler* handler,
-                                       const syncer::ObjectIdSet& ids) override;
-  void UnregisterInvalidationHandler(
-      syncer::InvalidationHandler* handler) override;
-  syncer::InvalidatorState GetInvalidatorState() const override;
-  std::string GetInvalidatorClientId() const override;
-  InvalidationLogger* GetInvalidationLogger() override;
-  void RequestDetailedStatus(
-      base::Callback<void(const base::DictionaryValue&)> caller) const override;
-  IdentityProvider* GetIdentityProvider() override;
-
-  void UpdateCredentials(const std::string& username,
-                         const std::string& password);
-
-  void SendInvalidation(const syncer::ObjectIdSet& ids);
-
- private:
-  scoped_ptr<IdentityProvider> identity_provider_;
-  scoped_ptr<syncer::P2PInvalidator> invalidator_;
-  std::string invalidator_id_;
-
-  DISALLOW_COPY_AND_ASSIGN(P2PInvalidationService);
-};
-
-}  // namespace invalidation
-
-#endif  // COMPONENTS_INVALIDATION_P2P_INVALIDATION_SERVICE_H_