[Sync] Move //components/sync_driver to //components/sync/driver.

components/sync_driver/device_info_sync_service.cc

Index: components/sync_driver/device_info_sync_service.cc
diff --git a/components/sync_driver/device_info_sync_service.cc b/components/sync_driver/device_info_sync_service.cc
deleted file mode 100644
index e0520c285bff5b2ff627c81f41d4b99f769b6f2a..0000000000000000000000000000000000000000
--- a/components/sync_driver/device_info_sync_service.cc
+++ /dev/null
@@ -1,342 +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/sync_driver/device_info_sync_service.h"
-
-#include <stddef.h>
-
-#include <algorithm>
-#include <utility>
-
-#include "base/memory/ptr_util.h"
-#include "base/time/time.h"
-#include "components/sync/api/sync_change.h"
-#include "components/sync/base/time.h"
-#include "components/sync/protocol/sync.pb.h"
-#include "components/sync_driver/device_info_util.h"
-#include "components/sync_driver/local_device_info_provider.h"
-
-namespace sync_driver {
-
-using base::Time;
-using base::TimeDelta;
-using syncer::ModelType;
-using syncer::SyncChange;
-using syncer::SyncChangeList;
-using syncer::SyncChangeProcessor;
-using syncer::SyncData;
-using syncer::SyncDataList;
-using syncer::SyncErrorFactory;
-using syncer::SyncMergeResult;
-
-DeviceInfoSyncService::DeviceInfoSyncService(
-    LocalDeviceInfoProvider* local_device_info_provider)
-    : local_device_info_provider_(local_device_info_provider) {
-  DCHECK(local_device_info_provider);
-}
-
-DeviceInfoSyncService::~DeviceInfoSyncService() {
-}
-
-SyncMergeResult DeviceInfoSyncService::MergeDataAndStartSyncing(
-    ModelType type,
-    const SyncDataList& initial_sync_data,
-    std::unique_ptr<SyncChangeProcessor> sync_processor,
-    std::unique_ptr<SyncErrorFactory> error_handler) {
-  DCHECK(sync_processor.get());
-  DCHECK(error_handler.get());
-  DCHECK_EQ(type, syncer::DEVICE_INFO);
-
-  DCHECK(!IsSyncing());
-
-  sync_processor_ = std::move(sync_processor);
-  error_handler_ = std::move(error_handler);
-
-  // Initialization should be completed before this type is enabled
-  // and local device info must be available.
-  const DeviceInfo* local_device_info =
-      local_device_info_provider_->GetLocalDeviceInfo();
-  DCHECK(local_device_info != NULL);
-
-  // Indicates whether a local device has been added or updated.
-  // |change_type| defaults to ADD and might be changed to
-  // UPDATE to INVALID down below if the initial data contains
-  // data matching the local device ID.
-  SyncChange::SyncChangeType change_type = SyncChange::ACTION_ADD;
-  TimeDelta pulse_delay;
-  size_t num_items_new = 0;
-  size_t num_items_updated = 0;
-
-  // Iterate over all initial sync data and copy it to the cache.
-  for (SyncDataList::const_iterator iter = initial_sync_data.begin();
-       iter != initial_sync_data.end();
-       ++iter) {
-    DCHECK_EQ(syncer::DEVICE_INFO, iter->GetDataType());
-
-    const std::string& id = iter->GetSpecifics().device_info().cache_guid();
-
-    if (id == local_device_info->guid()) {
-      // |initial_sync_data| contains data matching the local device.
-      std::unique_ptr<DeviceInfo> synced_local_device_info =
-          base::WrapUnique(CreateDeviceInfo(*iter));
-
-      pulse_delay = DeviceInfoUtil::CalculatePulseDelay(
-          GetLastUpdateTime(*iter), Time::Now());
-      // Store the synced device info for the local device only if
-      // it is the same as the local info. Otherwise store the local
-      // device info and issue a change further below after finishing
-      // processing the |initial_sync_data|.
-      if (synced_local_device_info->Equals(*local_device_info) &&
-          !pulse_delay.is_zero()) {
-        change_type = SyncChange::ACTION_INVALID;
-      } else {
-        num_items_updated++;
-        change_type = SyncChange::ACTION_UPDATE;
-        continue;
-      }
-    } else {
-      // A new device that doesn't match the local device.
-      num_items_new++;
-    }
-
-    StoreSyncData(id, *iter);
-  }
-
-  syncer::SyncMergeResult result(type);
-
-  // If the SyncData for the local device is new or different then send it
-  // immediately, otherwise wait until the pulse interval has elapsed from the
-  // previous update. Regardless of the branch here we setup a timer loop with
-  // SendLocalData such that we continue pulsing every interval.
-  if (change_type == SyncChange::ACTION_INVALID) {
-    pulse_timer_.Start(
-        FROM_HERE, pulse_delay,
-        base::Bind(&DeviceInfoSyncService::SendLocalData,
-                   base::Unretained(this), SyncChange::ACTION_UPDATE));
-  } else {
-    SendLocalData(change_type);
-  }
-
-  result.set_num_items_before_association(1);
-  result.set_num_items_after_association(all_data_.size());
-  result.set_num_items_added(num_items_new);
-  result.set_num_items_modified(num_items_updated);
-  result.set_num_items_deleted(0);
-
-  NotifyObservers();
-
-  return result;
-}
-
-bool DeviceInfoSyncService::IsSyncing() const {
-  return !all_data_.empty();
-}
-
-void DeviceInfoSyncService::StopSyncing(syncer::ModelType type) {
-  bool was_syncing = IsSyncing();
-
-  pulse_timer_.Stop();
-  all_data_.clear();
-  sync_processor_.reset();
-  error_handler_.reset();
-
-  if (was_syncing) {
-    NotifyObservers();
-  }
-}
-
-SyncDataList DeviceInfoSyncService::GetAllSyncData(
-    syncer::ModelType type) const {
-  SyncDataList list;
-
-  for (SyncDataMap::const_iterator iter = all_data_.begin();
-       iter != all_data_.end();
-       ++iter) {
-    list.push_back(iter->second);
-  }
-
-  return list;
-}
-
-syncer::SyncError DeviceInfoSyncService::ProcessSyncChanges(
-    const tracked_objects::Location& from_here,
-    const SyncChangeList& change_list) {
-  syncer::SyncError error;
-
-  DCHECK(local_device_info_provider_->GetLocalDeviceInfo());
-  const std::string& local_device_id =
-      local_device_info_provider_->GetLocalDeviceInfo()->guid();
-
-  bool has_changes = false;
-
-  // Iterate over all chanages and merge entries.
-  for (SyncChangeList::const_iterator iter = change_list.begin();
-       iter != change_list.end();
-       ++iter) {
-    const SyncData& sync_data = iter->sync_data();
-    DCHECK_EQ(syncer::DEVICE_INFO, sync_data.GetDataType());
-
-    const std::string& client_id =
-        sync_data.GetSpecifics().device_info().cache_guid();
-    // Ignore device info matching the local device.
-    if (local_device_id == client_id) {
-      DVLOG(1) << "Ignoring sync changes for the local DEVICE_INFO";
-      continue;
-    }
-
-    if (iter->change_type() == syncer::SyncChange::ACTION_DELETE) {
-      has_changes = true;
-      DeleteSyncData(client_id);
-    } else if (iter->change_type() == syncer::SyncChange::ACTION_UPDATE ||
-               iter->change_type() == syncer::SyncChange::ACTION_ADD) {
-      has_changes = true;
-      StoreSyncData(client_id, sync_data);
-    } else {
-      error.Reset(FROM_HERE, "Invalid action received.", syncer::DEVICE_INFO);
-    }
-  }
-
-  if (has_changes) {
-    NotifyObservers();
-  }
-
-  return error;
-}
-
-std::unique_ptr<DeviceInfo> DeviceInfoSyncService::GetDeviceInfo(
-    const std::string& client_id) const {
-  SyncDataMap::const_iterator iter = all_data_.find(client_id);
-  if (iter == all_data_.end()) {
-    return std::unique_ptr<DeviceInfo>();
-  }
-
-  return base::WrapUnique(CreateDeviceInfo(iter->second));
-}
-
-ScopedVector<DeviceInfo> DeviceInfoSyncService::GetAllDeviceInfo() const {
-  ScopedVector<DeviceInfo> list;
-
-  for (SyncDataMap::const_iterator iter = all_data_.begin();
-       iter != all_data_.end();
-       ++iter) {
-    list.push_back(CreateDeviceInfo(iter->second));
-  }
-
-  return list;
-}
-
-void DeviceInfoSyncService::AddObserver(Observer* observer) {
-  observers_.AddObserver(observer);
-}
-
-void DeviceInfoSyncService::RemoveObserver(Observer* observer) {
-  observers_.RemoveObserver(observer);
-}
-
-int DeviceInfoSyncService::CountActiveDevices() const {
-  return CountActiveDevices(Time::Now());
-}
-
-void DeviceInfoSyncService::NotifyObservers() {
-  FOR_EACH_OBSERVER(Observer, observers_, OnDeviceInfoChange());
-}
-
-SyncData DeviceInfoSyncService::CreateLocalData(const DeviceInfo* info) {
-  sync_pb::EntitySpecifics entity;
-  sync_pb::DeviceInfoSpecifics& specifics = *entity.mutable_device_info();
-
-  specifics.set_cache_guid(info->guid());
-  specifics.set_client_name(info->client_name());
-  specifics.set_chrome_version(info->chrome_version());
-  specifics.set_sync_user_agent(info->sync_user_agent());
-  specifics.set_device_type(info->device_type());
-  specifics.set_signin_scoped_device_id(info->signin_scoped_device_id());
-  specifics.set_last_updated_timestamp(syncer::TimeToProtoTime(Time::Now()));
-
-  return CreateLocalData(entity);
-}
-
-SyncData DeviceInfoSyncService::CreateLocalData(
-    const sync_pb::EntitySpecifics& entity) {
-  const sync_pb::DeviceInfoSpecifics& specifics = entity.device_info();
-  return SyncData::CreateLocalData(DeviceInfoUtil::SpecificsToTag(specifics),
-                                   specifics.client_name(), entity);
-}
-
-DeviceInfo* DeviceInfoSyncService::CreateDeviceInfo(
-    const syncer::SyncData& sync_data) {
-  const sync_pb::DeviceInfoSpecifics& specifics =
-      sync_data.GetSpecifics().device_info();
-
-  return new DeviceInfo(specifics.cache_guid(),
-                        specifics.client_name(),
-                        specifics.chrome_version(),
-                        specifics.sync_user_agent(),
-                        specifics.device_type(),
-                        specifics.signin_scoped_device_id());
-}
-
-void DeviceInfoSyncService::StoreSyncData(const std::string& client_id,
-                                          const SyncData& sync_data) {
-  DVLOG(1) << "Storing DEVICE_INFO for "
-           << sync_data.GetSpecifics().device_info().client_name()
-           << " with ID " << client_id;
-  all_data_[client_id] = sync_data;
-}
-
-void DeviceInfoSyncService::DeleteSyncData(const std::string& client_id) {
-  SyncDataMap::iterator iter = all_data_.find(client_id);
-  if (iter != all_data_.end()) {
-    DVLOG(1) << "Deleting DEVICE_INFO for "
-             << iter->second.GetSpecifics().device_info().client_name()
-             << " with ID " << client_id;
-    all_data_.erase(iter);
-  }
-}
-
-void DeviceInfoSyncService::SendLocalData(
-    const SyncChange::SyncChangeType change_type) {
-  DCHECK_NE(change_type, SyncChange::ACTION_INVALID);
-  DCHECK(sync_processor_);
-
-  const DeviceInfo* device_info =
-      local_device_info_provider_->GetLocalDeviceInfo();
-  const SyncData& data = CreateLocalData(device_info);
-  StoreSyncData(device_info->guid(), data);
-
-  SyncChangeList change_list;
-  change_list.push_back(SyncChange(FROM_HERE, change_type, data));
-  sync_processor_->ProcessSyncChanges(FROM_HERE, change_list);
-
-  pulse_timer_.Start(
-      FROM_HERE, DeviceInfoUtil::kPulseInterval,
-      base::Bind(&DeviceInfoSyncService::SendLocalData, base::Unretained(this),
-                 SyncChange::ACTION_UPDATE));
-}
-
-int DeviceInfoSyncService::CountActiveDevices(const Time now) const {
-  return std::count_if(all_data_.begin(), all_data_.end(),
-                       [now](SyncDataMap::const_reference pair) {
-                         return DeviceInfoUtil::IsActive(
-                             GetLastUpdateTime(pair.second), now);
-                       });
-}
-
-// static
-Time DeviceInfoSyncService::GetLastUpdateTime(const SyncData& device_info) {
-  if (device_info.GetSpecifics().device_info().has_last_updated_timestamp()) {
-    return syncer::ProtoTimeToTime(
-        device_info.GetSpecifics().device_info().last_updated_timestamp());
-  } else if (!device_info.IsLocal()) {
-    // If there is no |last_updated_timestamp| present, fallback to mod time.
-    return syncer::SyncDataRemote(device_info).GetModifiedTime();
-  } else {
-    // We shouldn't reach this point for remote data, so this means we're likely
-    // looking at the local device info. Using a long ago time is perfect, since
-    // the desired behavior is to update/pulse our data as soon as possible.
-    return Time();
-  }
-}
-
-}  // namespace sync_driver