Use nullptr_t for RefPtr, PassRefPtr and RawPtr.

Source/modules/filesystem/InspectorFileSystemAgent.cpp

 /*
  * Copyright (C) 2011, 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 113 matching lines @@
 
 private:
     bool didHitError(FileError* error)
     {
         reportResult(error->code());
         return true;
     }
 
     bool didGetEntry(Entry*);
 
-    void reportResult(FileError::ErrorCode errorCode, PassRefPtr<TypeBuilder::FileSystem::Entry> entry = 0)
+    void reportResult(FileError::ErrorCode errorCode, PassRefPtr<TypeBuilder::FileSystem::Entry> entry = nullptr)
     {
         m_requestCallback->sendSuccess(static_cast<int>(errorCode), entry);
     }
 
     FileSystemRootRequest(PassRefPtr<RequestFileSystemRootCallback> requestCallback, const String& type)
         : m_requestCallback(requestCallback)
         , m_type(type) { }
 
     RefPtr<RequestFileSystemRootCallback> m_requestCallback;
     String m_type;
@@ skipping 50 matching lines @@
 private:
     bool didHitError(FileError* error)
     {
         reportResult(error->code());
         return true;
     }
 
     bool didGetEntry(Entry*);
     bool didReadDirectoryEntries(const EntryVector&);
 
-    void reportResult(FileError::ErrorCode errorCode, PassRefPtr<Array<TypeBuilder::FileSystem::Entry> > entries = 0)
+    void reportResult(FileError::ErrorCode errorCode, PassRefPtr<Array<TypeBuilder::FileSystem::Entry> > entries = nullptr)
     {
         m_requestCallback->sendSuccess(static_cast<int>(errorCode), entries);
     }
 
     DirectoryContentRequest(PassRefPtr<RequestDirectoryContentCallback> requestCallback, const String& url)
         : m_requestCallback(requestCallback)
         , m_url(ParsedURLString, url) { }
 
     void readDirectoryEntries();
 
@@ skipping 100 matching lines @@
 private:
     bool didHitError(FileError* error)
     {
         reportResult(error->code());
         return true;
     }
 
     bool didGetEntry(Entry*);
     bool didGetMetadata(Metadata*);
 
-    void reportResult(FileError::ErrorCode errorCode, PassRefPtr<TypeBuilder::FileSystem::Metadata> metadata = 0)
+    void reportResult(FileError::ErrorCode errorCode, PassRefPtr<TypeBuilder::FileSystem::Metadata> metadata = nullptr)
     {
         m_requestCallback->sendSuccess(static_cast<int>(errorCode), metadata);
     }
 
     MetadataRequest(PassRefPtr<RequestMetadataCallback> requestCallback, const String& url)
         : m_requestCallback(requestCallback)
         , m_url(ParsedURLString, url) { }
 
     RefPtr<RequestMetadataCallback> m_requestCallback;
     KURL m_url;
@@ skipping 380 matching lines @@
     for (Frame* frame = m_page->mainFrame(); frame; frame = frame->tree().traverseNext()) {
         if (frame->document() && frame->document()->securityOrigin()->isSameSchemeHostPort(origin))
             return frame->document();
     }
 
     *error = "No frame is available for the request";
     return 0;
 }
 
 } // namespace WebCore