IndexedDB: Use [Default] in IDLs to reduce overloads in implementations

Source/core/inspector/InspectorIndexedDBAgent.cpp

 /*
  * Copyright (C) 2012 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 508 matching lines @@
 
         ExceptionCode ec = 0;
         RefPtr<IDBRequest> idbRequest;
         if (!m_indexName.isEmpty()) {
             RefPtr<IDBIndex> idbIndex = indexForObjectStore(idbObjectStore.get(), m_indexName);
             if (!idbIndex) {
                 m_requestCallback->sendFailure("Could not get index");
                 return;
             }
 
-            idbRequest = idbIndex->openCursor(context(), PassRefPtr<IDBKeyRange>(m_idbKeyRange), ec);
+            idbRequest = idbIndex->openCursor(context(), PassRefPtr<IDBKeyRange>(m_idbKeyRange), IDBCursor::directionNext(), ec);
         } else
-            idbRequest = idbObjectStore->openCursor(context(), PassRefPtr<IDBKeyRange>(m_idbKeyRange), ec);
+            idbRequest = idbObjectStore->openCursor(context(), PassRefPtr<IDBKeyRange>(m_idbKeyRange), IDBCursor::directionNext(), ec);
         idbRequest->addEventListener(eventNames().successEvent, openCursorCallback, false);
     }
 
     virtual RequestCallback* requestCallback() { return m_requestCallback.get(); }
     DataLoader(ScriptExecutionContext* scriptExecutionContext, PassRefPtr<RequestDataCallback> requestCallback, const InjectedScript& injectedScript, const String& objectStoreName, const String& indexName, PassRefPtr<IDBKeyRange> idbKeyRange, int skipCount, unsigned pageSize)
         : ExecutableWithDatabase(scriptExecutionContext)
         , m_requestCallback(requestCallback)
         , m_injectedScript(injectedScript)
         , m_objectStoreName(objectStoreName)
         , m_indexName(indexName)
@@ skipping 240 matching lines @@
     v8::HandleScope handleScope;
     v8::Handle<v8::Context> context = document->frame()->script()->mainWorldContext();
     ASSERT(!context.IsEmpty());
     v8::Context::Scope contextScope(context);
 
     RefPtr<ClearObjectStore> clearObjectStore = ClearObjectStore::create(document, objectStoreName, requestCallback);
     clearObjectStore->start(idbFactory, document->securityOrigin(), databaseName);
 }
 
 } // namespace WebCore