Implementation of OnDiskAttachmentStore.

sync/internal_api/attachments/in_memory_attachment_store.cc

Index: sync/internal_api/attachments/in_memory_attachment_store.cc
diff --git a/sync/internal_api/attachments/in_memory_attachment_store.cc b/sync/internal_api/attachments/in_memory_attachment_store.cc
index c1e366dc1acda9aed250527bbc7b9a1fa2ea2ce4..7175eb111bc27cba0b37222ddccb0d36bd488818 100644
--- a/sync/internal_api/attachments/in_memory_attachment_store.cc
+++ b/sync/internal_api/attachments/in_memory_attachment_store.cc
@@ -21,6 +21,12 @@ InMemoryAttachmentStore::InMemoryAttachmentStore(
 InMemoryAttachmentStore::~InMemoryAttachmentStore() {
 }
 
+void InMemoryAttachmentStore::Load(const LoadCallback& callback) {
+  DCHECK(CalledOnValidThread());
+  Result result_code = SUCCESS;
+  callback_task_runner_->PostTask(FROM_HERE, base::Bind(callback, result_code));
+}
+
 void InMemoryAttachmentStore::Read(const AttachmentIdList& ids,
                                    const ReadCallback& callback) {
   DCHECK(CalledOnValidThread());