[Sync] Move sessions/ to engine/cycle/ and rename things to match.

components/sync/driver/about_sync_util_unittest.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/about_sync_util.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "components/sync/driver/fake_sync_service.h"
 #include "components/sync/engine/sync_status.h"
 #include "components/version_info/version_info.h"
@@ skipping 15 matching lines @@
   bool HasUnrecoverableError() const override { return true; }
 
   bool QueryDetailedSyncStatus(syncer::SyncStatus* result) override {
     return false;
   }
 
   base::string16 GetLastSyncedTimeString() const override {
     return base::string16(base::ASCIIToUTF16("none"));
   }
 
-  syncer::sessions::SyncSessionSnapshot GetLastSessionSnapshot()
-      const override {
-    return syncer::sessions::SyncSessionSnapshot();
+  syncer::SyncCycleSnapshot GetLastCycleSnapshot() const override {
+    return syncer::SyncCycleSnapshot();
   }
 };
 
 TEST(SyncUIUtilTestAbout, ConstructAboutInformationWithUnrecoverableErrorTest) {
   SyncServiceMock service;
 
   std::unique_ptr<base::DictionaryValue> strings(ConstructAboutInformation(
       &service, NULL, version_info::Channel::UNKNOWN));
 
   EXPECT_TRUE(strings->HasKey("unrecoverable_error_detected"));
 }
 
 }  // namespace
 }  // namespace sync_ui_util
 }  // namespace sync_driver