[Sync] Move ModelTypeProcessor* and rename *Impl to Shared*.

sync/engine/model_type_processor_impl.h

Index: sync/engine/model_type_processor_impl.h
diff --git a/sync/engine/model_type_processor_impl.h b/sync/engine/model_type_processor_impl.h
deleted file mode 100644
index 04a31419c9e13c96c257ee76a70ce58fbc615633..0000000000000000000000000000000000000000
--- a/sync/engine/model_type_processor_impl.h
+++ /dev/null
@@ -1,162 +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.
-
-#ifndef SYNC_ENGINE_MODEL_TYPE_SYNC_PROXY_IMPL_H_
-#define SYNC_ENGINE_MODEL_TYPE_SYNC_PROXY_IMPL_H_
-
-#include "base/containers/scoped_ptr_map.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "base/threading/non_thread_safe.h"
-#include "sync/base/sync_export.h"
-#include "sync/engine/model_type_processor.h"
-#include "sync/internal_api/public/base/model_type.h"
-#include "sync/internal_api/public/non_blocking_sync_common.h"
-#include "sync/protocol/sync.pb.h"
-
-namespace syncer_v2 {
-class CommitQueue;
-class ModelTypeEntity;
-class ModelTypeStore;
-class SyncContextProxy;
-
-// A sync component embedded on the synced type's thread that helps to handle
-// communication between sync and model type threads.
-class SYNC_EXPORT_PRIVATE ModelTypeProcessorImpl : public ModelTypeProcessor,
-                                                   base::NonThreadSafe {
- public:
-  ModelTypeProcessorImpl(syncer::ModelType type,
-                         base::WeakPtr<ModelTypeStore> store);
-  ~ModelTypeProcessorImpl() override;
-
-  // Returns true if this object believes that sync is preferred for this type.
-  //
-  // By "preferred", we mean that a policy decision has been made that this
-  // type should be synced.  Most of the time this is controlled by a user
-  // clicking a checkbox on the settings page.
-  //
-  // The canonical preferred state is based on SyncPrefs on the UI thread.  At
-  // best, this value is stale and may lag behind the one set on the UI thread.
-  // Before this type has registered with the UI thread, it's mostly just an
-  // informed guess.
-  bool IsPreferred() const;
-
-  // Returns true if the handshake with sync thread is complete.
-  bool IsConnected() const;
-
-  // Returns the model type handled by this type sync proxy.
-  syncer::ModelType GetModelType() const;
-
-  // Starts the handshake with the sync thread.
-  void Enable(scoped_ptr<SyncContextProxy> context_proxy);
-
-  // Severs all ties to the sync thread and may delete local sync state.
-  // Another call to Enable() can be used to re-establish this connection.
-  void Disable();
-
-  // Severs all ties to the sync thread.
-  // Another call to Enable() can be used to re-establish this connection.
-  void Disconnect();
-
-  // Callback used to process the handshake response.
-  void OnConnect(scoped_ptr<CommitQueue> worker) override;
-
-  // Requests that an item be stored in sync.
-  void Put(const std::string& client_tag,
-           const sync_pb::EntitySpecifics& specifics);
-
-  // Deletes an item from sync.
-  void Delete(const std::string& client_tag);
-
-  // Informs this object that some of its commit requests have been
-  // successfully serviced.
-  void OnCommitCompleted(const DataTypeState& type_state,
-                         const CommitResponseDataList& response_list) override;
-
-  // Informs this object that there are some incoming updates is should
-  // handle.
-  void OnUpdateReceived(const DataTypeState& type_state,
-                        const UpdateResponseDataList& response_list,
-                        const UpdateResponseDataList& pending_updates) override;
-
-  // Returns the list of pending updates.
-  //
-  // This is used as a helper function, but it's public mainly for testing.
-  // The current test harness setup doesn't allow us to test the data that the
-  // proxy sends to the worker during initialization, so we use this to inspect
-  // its state instead.
-  UpdateResponseDataList GetPendingUpdates();
-
-  // Returns the long-lived WeakPtr that is intended to be registered with the
-  // ProfileSyncService.
-  base::WeakPtr<ModelTypeProcessorImpl> AsWeakPtrForUI();
-
- private:
-  typedef base::ScopedPtrMap<std::string, scoped_ptr<ModelTypeEntity>>
-      EntityMap;
-  typedef base::ScopedPtrMap<std::string, scoped_ptr<UpdateResponseData>>
-      UpdateMap;
-
-  // Sends all commit requests that are due to be sent to the sync thread.
-  void FlushPendingCommitRequests();
-
-  // Clears any state related to outstanding communications with the
-  // CommitQueue.  Used when we want to disconnect from
-  // the current worker.
-  void ClearTransientSyncState();
-
-  // Clears any state related to our communications with the current sync
-  // account.  Useful when a user signs out of the current account.
-  void ClearSyncState();
-
-  syncer::ModelType type_;
-  DataTypeState data_type_state_;
-
-  // Whether or not sync is preferred for this type.  This is a cached copy of
-  // the canonical copy information on the UI thread.
-  bool is_preferred_;
-
-  // Whether or not this object has completed its initial handshake with the
-  // SyncContextProxy.
-  bool is_connected_;
-
-  // Our link to data type management on the sync thread.
-  // Used for enabling and disabling sync for this type.
-  //
-  // Beware of NULL pointers: This object is uninitialized when we are not
-  // connected to sync.
-  scoped_ptr<SyncContextProxy> sync_context_proxy_;
-
-  // Reference to the CommitQueue.
-  //
-  // The interface hides the posting of tasks across threads as well as the
-  // CommitQueue's implementation.  Both of these features are
-  // useful in tests.
-  scoped_ptr<CommitQueue> worker_;
-
-  // The set of sync entities known to this object.
-  EntityMap entities_;
-
-  // A set of updates that can not be applied at this time.  These are never
-  // used by the model.  They are kept here only so we can save and restore
-  // them across restarts, and keep them in sync with our progress markers.
-  UpdateMap pending_updates_map_;
-
-  // Store is supplied by model type implementation. ModelTypeProcessorImpl
-  // uses store for persisting sync related data (entity state and data type
-  // state).
-  base::WeakPtr<ModelTypeStore> store_;
-
-  // We use two different WeakPtrFactories because we want the pointers they
-  // issue to have different lifetimes.  When asked to disconnect from the sync
-  // thread, we want to make sure that no tasks generated as part of the
-  // now-obsolete connection to affect us.  But we also want the WeakPtr we
-  // sent to the UI thread to remain valid.
-  base::WeakPtrFactory<ModelTypeProcessorImpl> weak_ptr_factory_for_ui_;
-  base::WeakPtrFactory<ModelTypeProcessorImpl> weak_ptr_factory_for_sync_;
-};
-
-}  // namespace syncer
-
-#endif  // SYNC_ENGINE_MODEL_TYPE_SYNC_PROXY_IMPL_H_