IndexedDB: Treat count of 0 as unbounded for getAll() methods

Source/modules/indexeddb/IDBIndex.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 217 matching lines @@
         return nullptr;
     }
 
     IDBRequest* request = IDBRequest::create(scriptState, IDBAny::create(this), m_transaction.get());
     backendDB()->get(m_transaction->id(), m_objectStore->id(), m_metadata.id, keyRange, keyOnly, WebIDBCallbacksImpl::create(request).leakPtr());
     return request;
 }
 
 IDBRequest* IDBIndex::getAllInternal(ScriptState* scriptState, const ScriptValue& range, unsigned long maxCount, ExceptionState& exceptionState, bool keyOnly)
 {
-    if (!maxCount) {
-        exceptionState.throwTypeError(IDBDatabase::notValidMaxCountErrorMessage);
-        return nullptr;
-    }
+    if (!maxCount)
+        maxCount = std::numeric_limits<uint32_t>::max();
+
     if (isDeleted()) {
         exceptionState.throwDOMException(InvalidStateError, IDBDatabase::indexDeletedErrorMessage);
         return nullptr;
     }
     if (m_transaction->isFinished() || m_transaction->isFinishing()) {
         exceptionState.throwDOMException(TransactionInactiveError, IDBDatabase::transactionFinishedErrorMessage);
         return nullptr;
     }
     if (!m_transaction->isActive()) {
         exceptionState.throwDOMException(TransactionInactiveError, IDBDatabase::transactionInactiveErrorMessage);
@@ skipping 17 matching lines @@
 {
     return m_transaction->backendDB();
 }
 
 bool IDBIndex::isDeleted() const
 {
     return m_deleted || m_objectStore->isDeleted();
 }
 
 } // namespace blink