Add dataLoss property to IDB's upgradeneeded event

public/platform/WebIDBCallbacks.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 27 matching lines @@
 class WebIDBIndex;
 class WebIDBKey;
 class WebIDBKeyPath;
 class WebString;
 struct WebIDBMetadata;
 
 class WebIDBCallbacks {
 public:
     virtual ~WebIDBCallbacks() { }
 
+    enum DataLoss {
+        DataLossNone = 0,
+        DataLossTotal = 1
+    };
+
     // For classes that follow the PImpl pattern, pass a const reference.
     // For the rest, pass ownership to the callee via a pointer.
     virtual void onError(const WebIDBDatabaseError&) { WEBKIT_ASSERT_NOT_REACHED(); }
     virtual void onSuccess(const WebVector<WebString>&) { WEBKIT_ASSERT_NOT_REACHED(); }
     virtual void onSuccess(WebIDBCursor*, const WebIDBKey& key, const WebIDBKey& primaryKey, const WebData&) { WEBKIT_ASSERT_NOT_REACHED(); }
     virtual void onSuccess(WebIDBDatabase*) { WEBKIT_ASSERT_NOT_REACHED(); }
     virtual void onSuccess(WebIDBDatabase*, const WebIDBMetadata&) { WEBKIT_ASSERT_NOT_REACHED(); }
     virtual void onSuccess(const WebIDBKey&) { WEBKIT_ASSERT_NOT_REACHED(); }
     virtual void onSuccess(const WebData&) { WEBKIT_ASSERT_NOT_REACHED(); }
     virtual void onSuccess(const WebData&, const WebIDBKey&, const WebIDBKeyPath&) { WEBKIT_ASSERT_NOT_REACHED(); }
     virtual void onSuccess(long long) { WEBKIT_ASSERT_NOT_REACHED(); }
     virtual void onSuccess() { WEBKIT_ASSERT_NOT_REACHED(); }
     virtual void onSuccess(const WebIDBKey& key, const WebIDBKey& primaryKey, const WebData&) { WEBKIT_ASSERT_NOT_REACHED(); }
     // FIXME: Remove the following overload once callers are updated:
     virtual void onBlocked() { WEBKIT_ASSERT_NOT_REACHED(); }
     virtual void onBlocked(long long oldVersion) { WEBKIT_ASSERT_NOT_REACHED(); }
-    virtual void onUpgradeNeeded(long long oldVersion, WebIDBDatabase*, const WebIDBMetadata&) { WEBKIT_ASSERT_NOT_REACHED(); }
+    virtual void onUpgradeNeeded(long long oldVersion, WebIDBDatabase* database, const WebIDBMetadata& metadata)
+    {
+        onUpgradeNeeded(oldVersion, database, metadata, DataLossNone);
+    }
+    virtual void onUpgradeNeeded(long long oldVersion, WebIDBDatabase*, const WebIDBMetadata&, DataLoss dataLoss) { WEBKIT_ASSERT_NOT_REACHED(); }
 };
 
 } // namespace WebKit
 
 #endif // WebIDBCallbacks_h