Implement VABCPartitionWriter

Test: treehugger

Change-Id: I7ec47adba0bc095879989b43ec642ea6a7852ab6
diff --git a/common/cow_operation_convert.cc b/common/cow_operation_convert.cc
new file mode 100644
index 0000000..a4eaba3
--- /dev/null
+++ b/common/cow_operation_convert.cc
@@ -0,0 +1,30 @@
+//
+// Copyright (C) 2020 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include "update_engine/common/cow_operation_convert.h"
+
+#include "update_engine/payload_generator/extent_ranges.h"
+
+namespace chromeos_update_engine {
+std::vector<CowOperation> ConvertToCowOperations(
+    const ::google::protobuf::RepeatedPtrField<
+        ::chromeos_update_engine::InstallOperation>& operations,
+    const ::google::protobuf::RepeatedPtrField<CowMergeOperation>&
+        merge_operations) {
+  // TODO(zhangkelvin) Implement this.
+  return {};
+}
+}  // namespace chromeos_update_engine