Use nullptr_t for RefPtr, PassRefPtr and RawPtr.

Source/modules/indexeddb/IDBKeyRange.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 20 matching lines @@
 #include "bindings/v8/IDBBindingUtilities.h"
 #include "core/dom/ExceptionCode.h"
 #include "modules/indexeddb/IDBDatabase.h"
 
 namespace WebCore {
 
 PassRefPtr<IDBKeyRange> IDBKeyRange::fromScriptValue(ExecutionContext* context, const ScriptValue& value, ExceptionState& exceptionState)
 {
     DOMRequestState requestState(context);
     if (value.isUndefined() || value.isNull())
-        return 0;
+        return nullptr;
 
     RefPtr<IDBKeyRange> range = scriptValueToIDBKeyRange(&requestState, value);
     if (range)
         return range.release();
 
     RefPtr<IDBKey> key = scriptValueToIDBKey(&requestState, value);
     if (!key || !key->isValid()) {
         exceptionState.throwDOMException(DataError, IDBDatabase::notValidKeyErrorMessage);
-        return 0;
+        return nullptr;
     }
 
     return adoptRef(new IDBKeyRange(key, key, LowerBoundClosed, UpperBoundClosed));
 }
 
 IDBKeyRange::IDBKeyRange(PassRefPtr<IDBKey> lower, PassRefPtr<IDBKey> upper, LowerBoundType lowerType, UpperBoundType upperType)
     : m_lower(lower)
     , m_upper(upper)
     , m_lowerType(lowerType)
     , m_upperType(upperType)
@@ skipping 11 matching lines @@
 {
     DOMRequestState requestState(context);
     return idbKeyToScriptValue(&requestState, m_upper);
 }
 
 PassRefPtr<IDBKeyRange> IDBKeyRange::only(PassRefPtr<IDBKey> prpKey, ExceptionState& exceptionState)
 {
     RefPtr<IDBKey> key = prpKey;
     if (!key || !key->isValid()) {
         exceptionState.throwDOMException(DataError, IDBDatabase::notValidKeyErrorMessage);
-        return 0;
+        return nullptr;
     }
 
     return IDBKeyRange::create(key, key, LowerBoundClosed, UpperBoundClosed);
 }
 
 PassRefPtr<IDBKeyRange> IDBKeyRange::only(ExecutionContext* context, const ScriptValue& keyValue, ExceptionState& exceptionState)
 {
     DOMRequestState requestState(context);
     RefPtr<IDBKey> key = scriptValueToIDBKey(&requestState, keyValue);
     if (!key || !key->isValid()) {
         exceptionState.throwDOMException(DataError, IDBDatabase::notValidKeyErrorMessage);
-        return 0;
+        return nullptr;
     }
 
     return IDBKeyRange::create(key, key, LowerBoundClosed, UpperBoundClosed);
 }
 
 PassRefPtr<IDBKeyRange> IDBKeyRange::lowerBound(ExecutionContext* context, const ScriptValue& boundValue, bool open, ExceptionState& exceptionState)
 {
     DOMRequestState requestState(context);
     RefPtr<IDBKey> bound = scriptValueToIDBKey(&requestState, boundValue);
     if (!bound || !bound->isValid()) {
         exceptionState.throwDOMException(DataError, IDBDatabase::notValidKeyErrorMessage);
-        return 0;
+        return nullptr;
     }
 
-    return IDBKeyRange::create(bound, 0, open ? LowerBoundOpen : LowerBoundClosed, UpperBoundOpen);
+    return IDBKeyRange::create(bound, nullptr, open ? LowerBoundOpen : LowerBoundClosed, UpperBoundOpen);
 }
 
 PassRefPtr<IDBKeyRange> IDBKeyRange::upperBound(ExecutionContext* context, const ScriptValue& boundValue, bool open, ExceptionState& exceptionState)
 {
     DOMRequestState requestState(context);
     RefPtr<IDBKey> bound = scriptValueToIDBKey(&requestState, boundValue);
     if (!bound || !bound->isValid()) {
         exceptionState.throwDOMException(DataError, IDBDatabase::notValidKeyErrorMessage);
-        return 0;
+        return nullptr;
     }
 
-    return IDBKeyRange::create(0, bound, LowerBoundOpen, open ? UpperBoundOpen : UpperBoundClosed);
+    return IDBKeyRange::create(nullptr, bound, LowerBoundOpen, open ? UpperBoundOpen : UpperBoundClosed);
 }
 
 PassRefPtr<IDBKeyRange> IDBKeyRange::bound(ExecutionContext* context, const ScriptValue& lowerValue, const ScriptValue& upperValue, bool lowerOpen, bool upperOpen, ExceptionState& exceptionState)
 {
     DOMRequestState requestState(context);
     RefPtr<IDBKey> lower = scriptValueToIDBKey(&requestState, lowerValue);
     RefPtr<IDBKey> upper = scriptValueToIDBKey(&requestState, upperValue);
 
     if (!lower || !lower->isValid() || !upper || !upper->isValid()) {
         exceptionState.throwDOMException(DataError, IDBDatabase::notValidKeyErrorMessage);
-        return 0;
+        return nullptr;
     }
     if (upper->isLessThan(lower.get())) {
         exceptionState.throwDOMException(DataError, "The lower key is greater than the upper key.");
-        return 0;
+        return nullptr;
     }
     if (upper->isEqual(lower.get()) && (lowerOpen || upperOpen)) {
         exceptionState.throwDOMException(DataError, "The lower key and upper key are equal and one of the bounds is open.");
-        return 0;
+        return nullptr;
     }
 
     return IDBKeyRange::create(lower, upper, lowerOpen ? LowerBoundOpen : LowerBoundClosed, upperOpen ? UpperBoundOpen : UpperBoundClosed);
 }
 
 } // namespace WebCore