[IndexedDB] Adding transaction and value support to observers

content/browser/indexed_db/indexed_db_callbacks.h

Index: content/browser/indexed_db/indexed_db_callbacks.h
diff --git a/content/browser/indexed_db/indexed_db_callbacks.h b/content/browser/indexed_db/indexed_db_callbacks.h
index aa3cc0c3ad231e72bdbaa9a70c5d07b991c67585..b72fc605e8cd53ff426a5fc3e80cafc062876907 100644
--- a/content/browser/indexed_db/indexed_db_callbacks.h
+++ b/content/browser/indexed_db/indexed_db_callbacks.h
@@ -35,6 +35,10 @@ struct IndexedDBValue;
 class CONTENT_EXPORT IndexedDBCallbacks
     : public base::RefCounted<IndexedDBCallbacks> {
  public:
+  // Destructively converts an IndexedDBValue to a Mojo Value.
+  static ::indexed_db::mojom::ValuePtr ConvertAndEraseValue(
+      IndexedDBValue* value);
+
   IndexedDBCallbacks(
       scoped_refptr<IndexedDBDispatcherHost> dispatcher_host,
       const url::Origin& origin,