Add IndexedDBValue wrapper class to group blob info with bits.

content/browser/indexed_db/indexed_db_database.h

Index: content/browser/indexed_db/indexed_db_database.h
diff --git a/content/browser/indexed_db/indexed_db_database.h b/content/browser/indexed_db/indexed_db_database.h
index 902d3558dbca9a99c6e75f84788a96a3f5e34cf6..7c65966f99ab2232e4c1414f9c3f3d672257acad 100644
--- a/content/browser/indexed_db/indexed_db_database.h
+++ b/content/browser/indexed_db/indexed_db_database.h
@@ -30,6 +30,7 @@ class IndexedDBKey;
 class IndexedDBKeyPath;
 class IndexedDBKeyRange;
 class IndexedDBTransaction;
+struct IndexedDBValue;
 
 class CONTENT_EXPORT IndexedDBDatabase
     : NON_EXPORTED_BASE(public base::RefCounted<IndexedDBDatabase>) {
@@ -129,7 +130,7 @@ class CONTENT_EXPORT IndexedDBDatabase
            scoped_refptr<IndexedDBCallbacks> callbacks);
   void Put(int64 transaction_id,
            int64 object_store_id,
-           std::string* value,
+           IndexedDBValue* value,
            scoped_ptr<IndexedDBKey> key,
            PutMode mode,
            scoped_refptr<IndexedDBCallbacks> callbacks,