Revert of [autofill] Sync server card and address metadata.

components/autofill/core/browser/webdata/autofill_wallet_metadata_syncable_service.h

Index: components/autofill/core/browser/webdata/autofill_wallet_metadata_syncable_service.h
diff --git a/components/autofill/core/browser/webdata/autofill_wallet_metadata_syncable_service.h b/components/autofill/core/browser/webdata/autofill_wallet_metadata_syncable_service.h
deleted file mode 100644
index 45a60ce0c501fac15e91626047aa12105f1a57c2..0000000000000000000000000000000000000000
--- a/components/autofill/core/browser/webdata/autofill_wallet_metadata_syncable_service.h
+++ /dev/null
@@ -1,150 +0,0 @@
-// Copyright 2015 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 COMPONENTS_AUTOFILL_CORE_BROWSER_WEBDATA_AUTOFILL_WALLET_METADATA_SYNCABLE_SERVICE_H_
-#define COMPONENTS_AUTOFILL_CORE_BROWSER_WEBDATA_AUTOFILL_WALLET_METADATA_SYNCABLE_SERVICE_H_
-
-#include <map>
-#include <string>
-
-#include "base/callback.h"
-#include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/scoped_observer.h"
-#include "base/supports_user_data.h"
-#include "base/threading/thread_checker.h"
-#include "components/autofill/core/browser/webdata/autofill_webdata_service_observer.h"
-#include "sync/api/sync_change_processor.h"
-#include "sync/api/sync_data.h"
-#include "sync/api/sync_error.h"
-#include "sync/api/sync_merge_result.h"
-#include "sync/api/syncable_service.h"
-
-namespace syncer {
-class SyncErrorFactory;
-}
-
-namespace tracked_objects {
-class Location;
-}
-
-namespace autofill {
-
-class AutofillDataModel;
-class AutofillProfile;
-class AutofillProfileChange;
-class AutofillWebDataBackend;
-class AutofillWebDataService;
-class CreditCard;
-class CreditCardChange;
-
-// Syncs usage counts and last use dates (metadata) for Wallet cards and
-// addresses (data). Creation and deletion of metadata on the sync server
-// follows the creation and deletion of the local metadata. (Local metadata has
-// 1:1 relationship with Wallet data.)
-class AutofillWalletMetadataSyncableService
-    : public base::SupportsUserData::Data,
-      public syncer::SyncableService,
-      public AutofillWebDataServiceObserverOnDBThread {
- public:
-  ~AutofillWalletMetadataSyncableService() override;
-
-  // syncer::SyncableService implementation.
-  syncer::SyncMergeResult MergeDataAndStartSyncing(
-      syncer::ModelType type,
-      const syncer::SyncDataList& initial_sync_data,
-      scoped_ptr<syncer::SyncChangeProcessor> sync_processor,
-      scoped_ptr<syncer::SyncErrorFactory> sync_error_factory) override;
-  void StopSyncing(syncer::ModelType type) override;
-  syncer::SyncDataList GetAllSyncData(syncer::ModelType type) const override;
-  syncer::SyncError ProcessSyncChanges(
-      const tracked_objects::Location& from_here,
-      const syncer::SyncChangeList& changes_from_sync) override;
-
-  // AutofillWebDataServiceObserverOnDBThread implementation.
-  void AutofillProfileChanged(const AutofillProfileChange& change) override;
-  void CreditCardChanged(const CreditCardChange& change) override;
-  void AutofillMultipleChanged() override;
-
-  // Creates a new AutofillWalletMetadataSyncableService and hangs it off of
-  // |web_data_service|, which takes ownership. This method should only be
-  // called on |web_data_service|'s DB thread.
-  static void CreateForWebDataServiceAndBackend(
-      AutofillWebDataService* web_data_service,
-      AutofillWebDataBackend* webdata_backend,
-      const std::string& app_locale);
-
-  // Retrieves the AutofillWalletMetadataSyncableService stored on
-  // |web_data_service|.
-  static AutofillWalletMetadataSyncableService* FromWebDataService(
-      AutofillWebDataService* web_data_service);
-
- protected:
-  AutofillWalletMetadataSyncableService(AutofillWebDataBackend* webdata_backend,
-                                        const std::string& app_locale);
-
-  // Populates the provided |profiles| and |cards| with mappings from server ID
-  // to unowned server profiles and server cards as read from disk. This data
-  // contains the usage stats. Returns true on success.
-  virtual bool GetLocalData(std::map<std::string, AutofillProfile*>* profiles,
-                            std::map<std::string, CreditCard*>* cards) const;
-
-  // Updates the stats for |profile| stored on disk. Does not trigger
-  // notifications that this profile was updated.
-  virtual bool UpdateAddressStats(const AutofillProfile& profile);
-
-  // Updates the stats for |credit_card| stored on disk. Does not trigger
-  // notifications that this credit card was updated.
-  virtual bool UpdateCardStats(const CreditCard& credit_card);
-
-  // Sends the |changes_to_sync| to the sync server.
-  virtual syncer::SyncError SendChangesToSyncServer(
-      const syncer::SyncChangeList& changes_to_sync);
-
- private:
-  // Merges local metadata with |sync_data|.
-  //
-  // Sends an "update" to the sync server if |sync_data| contains metadata that
-  // is present locally, but local metadata has higher use count and later use
-  // date.
-  //
-  // Sends a "create" to the sync server if |sync_data| does not have some local
-  // metadata.
-  //
-  // Sends a "delete" to the sync server if |sync_data| contains metadata that
-  // is not present locally.
-  syncer::SyncMergeResult MergeData(const syncer::SyncDataList& sync_data);
-
-  // Merges |remote| metadata into a collection of metadata |locals|. Returns
-  // true if the corresponding local metadata was found.
-  //
-  // Stores an "update" in |changes_to_sync| if |remote| corresponds to an item
-  // in |locals| that has higher use count and later use date.
-  template <class DataType>
-  bool MergeRemote(const syncer::SyncData& remote,
-                   const base::Callback<bool(const DataType&)>& updater,
-                   std::map<std::string, DataType*>* locals,
-                   syncer::SyncChangeList* changes_to_sync);
-
-  // Sends updates to the sync server.
-  void AutofillDataModelChanged(const std::string& server_id,
-                                const AutofillDataModel& local);
-
-  base::ThreadChecker thread_checker_;
-  AutofillWebDataBackend* webdata_backend_;  // Weak ref.
-  ScopedObserver<AutofillWebDataBackend, AutofillWalletMetadataSyncableService>
-      scoped_observer_;
-  scoped_ptr<syncer::SyncChangeProcessor> sync_processor_;
-  scoped_ptr<syncer::SyncErrorFactory> sync_error_factory_;
-
-  // Cache of sync server data maintained to avoid expensive calls to
-  // GetAllSyncData().
-  syncer::SyncDataList cache_;
-
-  DISALLOW_COPY_AND_ASSIGN(AutofillWalletMetadataSyncableService);
-};
-
-}  // namespace autofill
-
-#endif  // COMPONENTS_AUTOFILL_CORE_BROWSER_WEBDATA_AUTOFILL_WALLET_METADATA_SYNCABLE_SERVICE_H_