Use nullptr_t for RefPtr, PassRefPtr and RawPtr.

Source/modules/indexeddb/IDBFactory.cpp

 /*
  * 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 58 matching lines @@
         Document* document = toDocument(context);
         return document->frame() && document->page();
     }
     return true;
 }
 
 PassRefPtr<IDBRequest> IDBFactory::getDatabaseNames(ExecutionContext* context, ExceptionState& exceptionState)
 {
     IDB_TRACE("IDBFactory::getDatabaseNames");
     if (!isContextValid(context))
-        return 0;
+        return nullptr;
     if (!context->securityOrigin()->canAccessDatabase()) {
         exceptionState.throwSecurityError("access to the Indexed Database API is denied in this context.");
-        return 0;
+        return nullptr;
     }
 
     RefPtr<IDBRequest> request = IDBRequest::create(context, IDBAny::createNull(), 0);
 
     if (!m_permissionClient->allowIndexedDB(context, "Database Listing")) {
         request->onError(DOMError::create(UnknownError, permissionDeniedErrorMessage));
         return request;
     }
 
     blink::Platform::current()->idbFactory()->getDatabaseNames(WebIDBCallbacksImpl::create(request).leakPtr(), createDatabaseIdentifierFromSecurityOrigin(context->securityOrigin()));
     return request;
 }
 
 PassRefPtr<IDBOpenDBRequest> IDBFactory::open(ExecutionContext* context, const String& name, unsigned long long version, ExceptionState& exceptionState)
 {
     IDB_TRACE("IDBFactory::open");
     if (!version) {
         exceptionState.throwTypeError("The version provided must not be 0.");
-        return 0;
+        return nullptr;
     }
     return openInternal(context, name, version, exceptionState);
 }
 
 PassRefPtr<IDBOpenDBRequest> IDBFactory::openInternal(ExecutionContext* context, const String& name, int64_t version, ExceptionState& exceptionState)
 {
     blink::Platform::current()->histogramEnumeration("WebCore.IndexedDB.FrontEndAPICalls", IDBOpenCall, IDBMethodsMax);
     ASSERT(version >= 1 || version == IDBDatabaseMetadata::NoIntVersion);
     if (name.isNull()) {
         exceptionState.throwTypeError("The name provided must not be empty.");
-        return 0;
+        return nullptr;
     }
     if (!isContextValid(context))
-        return 0;
+        return nullptr;
     if (!context->securityOrigin()->canAccessDatabase()) {
         exceptionState.throwSecurityError("access to the Indexed Database API is denied in this context.");
-        return 0;
+        return nullptr;
     }
 
     RefPtr<IDBDatabaseCallbacks> databaseCallbacks = IDBDatabaseCallbacks::create();
     int64_t transactionId = IDBDatabase::nextTransactionId();
     RefPtr<IDBOpenDBRequest> request = IDBOpenDBRequest::create(context, databaseCallbacks, transactionId, version);
 
     if (!m_permissionClient->allowIndexedDB(context, name)) {
         request->onError(DOMError::create(UnknownError, permissionDeniedErrorMessage));
         return request;
     }
 
     blink::Platform::current()->idbFactory()->open(name, version, transactionId, WebIDBCallbacksImpl::create(request).leakPtr(), WebIDBDatabaseCallbacksImpl::create(databaseCallbacks.release()).leakPtr(), createDatabaseIdentifierFromSecurityOrigin(context->securityOrigin()));
     return request;
 }
 
 PassRefPtr<IDBOpenDBRequest> IDBFactory::open(ExecutionContext* context, const String& name, ExceptionState& exceptionState)
 {
     IDB_TRACE("IDBFactory::open");
     return openInternal(context, name, IDBDatabaseMetadata::NoIntVersion, exceptionState);
 }
 
 PassRefPtr<IDBOpenDBRequest> IDBFactory::deleteDatabase(ExecutionContext* context, const String& name, ExceptionState& exceptionState)
 {
     IDB_TRACE("IDBFactory::deleteDatabase");
     blink::Platform::current()->histogramEnumeration("WebCore.IndexedDB.FrontEndAPICalls", IDBDeleteDatabaseCall, IDBMethodsMax);
     if (name.isNull()) {
         exceptionState.throwTypeError("The name provided must not be empty.");
-        return 0;
+        return nullptr;
     }
     if (!isContextValid(context))
-        return 0;
+        return nullptr;
     if (!context->securityOrigin()->canAccessDatabase()) {
         exceptionState.throwSecurityError("access to the Indexed Database API is denied in this context.");
-        return 0;
+        return nullptr;
     }
 
-    RefPtr<IDBOpenDBRequest> request = IDBOpenDBRequest::create(context, 0, 0, IDBDatabaseMetadata::DefaultIntVersion);
+    RefPtr<IDBOpenDBRequest> request = IDBOpenDBRequest::create(context, nullptr, 0, IDBDatabaseMetadata::DefaultIntVersion);
 
     if (!m_permissionClient->allowIndexedDB(context, name)) {
         request->onError(DOMError::create(UnknownError, permissionDeniedErrorMessage));
         return request;
     }
 
     blink::Platform::current()->idbFactory()->deleteDatabase(name, WebIDBCallbacksImpl::create(request).leakPtr(), createDatabaseIdentifierFromSecurityOrigin(context->securityOrigin()));
     return request;
 }
 
 short IDBFactory::cmp(ExecutionContext* context, const ScriptValue& firstValue, const ScriptValue& secondValue, ExceptionState& exceptionState)
 {
     DOMRequestState requestState(context);
     RefPtr<IDBKey> first = scriptValueToIDBKey(&requestState, firstValue);
     RefPtr<IDBKey> second = scriptValueToIDBKey(&requestState, secondValue);
 
     ASSERT(first);
     ASSERT(second);
 
     if (!first->isValid() || !second->isValid()) {
         exceptionState.throwDOMException(DataError, IDBDatabase::notValidKeyErrorMessage);
         return 0;
     }
 
     return static_cast<short>(first->compare(second.get()));
 }
 
 } // namespace WebCore