[Sync] Move ChangeRecord into its own file (change_record.{h,cc})

chrome/browser/sync/abstract_profile_sync_service_test.cc

Index: chrome/browser/sync/abstract_profile_sync_service_test.cc
diff --git a/chrome/browser/sync/abstract_profile_sync_service_test.cc b/chrome/browser/sync/abstract_profile_sync_service_test.cc
index f8ada2a38e8758b59797199aeb84ab037092319e..2c9de3e340043988917c7b741af2f536f28b49f2 100644
--- a/chrome/browser/sync/abstract_profile_sync_service_test.cc
+++ b/chrome/browser/sync/abstract_profile_sync_service_test.cc
@@ -32,11 +32,13 @@ using syncable::UNIQUE_SERVER_TAG;
 using syncable::UNITTEST;
 using syncable::WriteTransaction;
 
+/* static */
 const std::string ProfileSyncServiceTestHelper::GetTagForType(
     ModelType model_type) {
   return syncable::ModelTypeToRootTag(model_type);
 }
 
+/* static */
 bool ProfileSyncServiceTestHelper::CreateRoot(
     ModelType model_type, UserShare* user_share,
     TestIdFactory* ids) {
@@ -69,6 +71,17 @@ bool ProfileSyncServiceTestHelper::CreateRoot(
   return true;
 }
 
+/* static */
+sync_api::ImmutableChangeRecordList
+    ProfileSyncServiceTestHelper::MakeSingletonChangeRecordList(
+        int64 node_id, sync_api::ChangeRecord::Action action) {
+  sync_api::ChangeRecord record;
+  record.action = action;
+  record.id = node_id;
+  sync_api::ChangeRecordList records(1, record);
+  return sync_api::ImmutableChangeRecordList(&records);
+}
+
 AbstractProfileSyncServiceTest::AbstractProfileSyncServiceTest()
     : ui_thread_(BrowserThread::UI, &ui_loop_),
       db_thread_(BrowserThread::DB),