Align IndexedDB metadata rollback on transaction abort to spec.

third_party/WebKit/Source/modules/indexeddb/IDBDatabase.h

Index: third_party/WebKit/Source/modules/indexeddb/IDBDatabase.h
diff --git a/third_party/WebKit/Source/modules/indexeddb/IDBDatabase.h b/third_party/WebKit/Source/modules/indexeddb/IDBDatabase.h
index 34711d9243cbaac43733b0cb3fdfaacefeaa53b3..33859a838232d8948e36d3644b9e0cb64e5aba64 100644
--- a/third_party/WebKit/Source/modules/indexeddb/IDBDatabase.h
+++ b/third_party/WebKit/Source/modules/indexeddb/IDBDatabase.h
@@ -64,17 +64,15 @@ public:
     ~IDBDatabase() override;
     DECLARE_VIRTUAL_TRACE();
 
-    void setMetadata(const IDBDatabaseMetadata& metadata) { m_metadata = metadata; }
-    void indexCreated(int64_t objectStoreId, const IDBIndexMetadata&);
-    void indexDeleted(int64_t objectStoreId, int64_t indexId);
-    void indexRenamed(int64_t objectStoreId, int64_t indexId, const String& newName);
+    void setMetadata(const IDBDatabaseMetadata&);
+    void setOwnMetadata(const IDBDatabaseOwnMetadata&);
     void transactionCreated(IDBTransaction*);
     void transactionFinished(const IDBTransaction*);
     const String& getObjectStoreName(int64_t objectStoreId) const;
 
     // Implement the IDL
-    const String& name() const { return m_metadata.name; }
-    unsigned long long version() const { return m_metadata.version; }
+    const String& name() const { return m_metadata.own.name; }
+    unsigned long long version() const { return m_metadata.own.version; }
     DOMStringList* objectStoreNames() const;
 
     IDBObjectStore* createObjectStore(const String& name, const IDBObjectStoreParameters& options, ExceptionState& exceptionState) { return createObjectStore(name, IDBKeyPath(options.keyPath()), options.autoIncrement(), exceptionState); }
@@ -112,7 +110,9 @@ public:
     {
         return findObjectStoreId(name) != IDBObjectStoreMetadata::InvalidId;
     }
-    void objectStoreRenamed(int64_t storeId, const String& newName);
+    void renameObjectStore(int64_t storeId, const String& newName);
+    void revertObjectStoreCreation(int64_t objectStoreId);
+    void revertObjectStoreMetadata(RefPtr<IDBObjectStoreMetadata> oldMetadata);
 
     // Will return nullptr if this database is stopped.
     WebIDBDatabase* backend() const { return m_backend.get(); }