[Sync] Move sessions files from sync_driver to sync_sessions.

components/sync_driver/glue/synced_session.cc

-// Copyright (c) 2012 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/glue/synced_session.h"
-
-#include "base/stl_util.h"
-
-namespace sync_driver {
-
-SyncedSession::SyncedSession()
-    : session_tag("invalid"), device_type(TYPE_UNSET) {
-}
-
-SyncedSession::~SyncedSession() {
-  STLDeleteContainerPairSecondPointers(windows.begin(), windows.end());
-}
-
-sync_pb::SessionHeader SyncedSession::ToSessionHeader() const {
-  sync_pb::SessionHeader header;
-  SyncedWindowMap::const_iterator iter;
-  for (iter = windows.begin(); iter != windows.end(); ++iter) {
-    sync_pb::SessionWindow* w = header.add_window();
-    w->CopyFrom(iter->second->ToSyncData());
-  }
-  header.set_client_name(session_name);
-  switch (device_type) {
-    case SyncedSession::TYPE_WIN:
-      header.set_device_type(sync_pb::SyncEnums_DeviceType_TYPE_WIN);
-      break;
-    case SyncedSession::TYPE_MACOSX:
-      header.set_device_type(sync_pb::SyncEnums_DeviceType_TYPE_MAC);
-      break;
-    case SyncedSession::TYPE_LINUX:
-      header.set_device_type(sync_pb::SyncEnums_DeviceType_TYPE_LINUX);
-      break;
-    case SyncedSession::TYPE_CHROMEOS:
-      header.set_device_type(sync_pb::SyncEnums_DeviceType_TYPE_CROS);
-      break;
-    case SyncedSession::TYPE_PHONE:
-      header.set_device_type(sync_pb::SyncEnums_DeviceType_TYPE_PHONE);
-      break;
-    case SyncedSession::TYPE_TABLET:
-      header.set_device_type(sync_pb::SyncEnums_DeviceType_TYPE_TABLET);
-      break;
-    case SyncedSession::TYPE_OTHER:
-    // Intentionally fall-through
-    default:
-      header.set_device_type(sync_pb::SyncEnums_DeviceType_TYPE_OTHER);
-      break;
-  }
-  return header;
-}
-
-}  // namespace sync_driver