Align IndexedDB metadata rollback on transaction abort to spec.

third_party/WebKit/Source/modules/indexeddb/IDBCursor.cpp

Index: third_party/WebKit/Source/modules/indexeddb/IDBCursor.cpp
diff --git a/third_party/WebKit/Source/modules/indexeddb/IDBCursor.cpp b/third_party/WebKit/Source/modules/indexeddb/IDBCursor.cpp
index be3602a4c2e2a679cb55389f02c6b2bca0e8c3b5..7157e0414aa15cf904216c822da5f7cf20b9b414 100644
--- a/third_party/WebKit/Source/modules/indexeddb/IDBCursor.cpp
+++ b/third_party/WebKit/Source/modules/indexeddb/IDBCursor.cpp
@@ -336,7 +336,7 @@ ScriptValue IDBCursor::value(ScriptState* scriptState)
     ASSERT(isCursorWithValue());
 
     IDBObjectStore* objectStore = effectiveObjectStore();
-    const IDBObjectStoreMetadata& metadata = objectStore->metadata();
+    const IDBObjectStoreOwnMetadata& metadata = objectStore->metadata().own;

[jsbell, 2016/09/16 18:17:28]

It seems wrong for IDBCursor to know so much about how we manage the metadata.

metadata.autoIncrement() could just be objectStore->autoIncrement();
metadata. We could add an IDBObjectStore::idbKeyPath() accessor too.

[pwnall, 2016/09/17 01:34:21]

Done.
This looks so clean! :)

     IDBAny* value;
     if (!m_value) {
         value = IDBAny::createUndefined();