Use nullptr_t for RefPtr, PassRefPtr and RawPtr.

Source/core/inspector/InjectedScript.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 240 matching lines @@
 {
     ASSERT(!hasNoValue());
     ScriptFunctionCall wrapFunction(injectedScriptObject(), "wrapObject");
     wrapFunction.appendArgument(value);
     wrapFunction.appendArgument(groupName);
     wrapFunction.appendArgument(canAccessInspectedWindow());
     wrapFunction.appendArgument(generatePreview);
     bool hadException = false;
     ScriptValue r = callFunctionWithEvalEnabled(wrapFunction, hadException);
     if (hadException)
-        return 0;
+        return nullptr;
     RefPtr<JSONObject> rawResult = r.toJSONValue(scriptState())->asObject();
     return TypeBuilder::Runtime::RemoteObject::runtimeCast(rawResult);
 }
 
 PassRefPtr<TypeBuilder::Runtime::RemoteObject> InjectedScript::wrapTable(const ScriptValue& table, const ScriptValue& columns) const
 {
     ASSERT(!hasNoValue());
     ScriptFunctionCall wrapFunction(injectedScriptObject(), "wrapTable");
     wrapFunction.appendArgument(canAccessInspectedWindow());
     wrapFunction.appendArgument(table);
     if (columns.hasNoValue())
         wrapFunction.appendArgument(false);
     else
         wrapFunction.appendArgument(columns);
     bool hadException = false;
     ScriptValue r = callFunctionWithEvalEnabled(wrapFunction, hadException);
     if (hadException)
-        return 0;
+        return nullptr;
     RefPtr<JSONObject> rawResult = r.toJSONValue(scriptState())->asObject();
     return TypeBuilder::Runtime::RemoteObject::runtimeCast(rawResult);
 }
 
 PassRefPtr<TypeBuilder::Runtime::RemoteObject> InjectedScript::wrapNode(Node* node, const String& groupName)
 {
     return wrapObject(nodeAsScriptValue(node), groupName);
 }
 
 ScriptValue InjectedScript::findObjectById(const String& objectId) const
@@ skipping 42 matching lines @@
     ASSERT(!hadException);
 }
 
 ScriptValue InjectedScript::nodeAsScriptValue(Node* node)
 {
     return InjectedScriptHost::nodeAsScriptValue(scriptState(), node);
 }
 
 } // namespace WebCore