Use nullptr_t for RefPtr, PassRefPtr and RawPtr.

Source/bindings/v8/SerializedScriptValue.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:
  *
  *     * 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 1712 matching lines @@
         memcpy(pixelArray->data(), m_buffer + m_position, pixelDataLength);
         m_position += pixelDataLength;
         *value = toV8(imageData.release(), v8::Handle<v8::Object>(), m_isolate);
         return true;
     }
 
     PassRefPtr<ArrayBuffer> doReadArrayBuffer()
     {
         uint32_t byteLength;
         if (!doReadUint32(&byteLength))
-            return 0;
+            return nullptr;
         if (m_position + byteLength > m_length)
-            return 0;
+            return nullptr;
         const void* bufferStart = m_buffer + m_position;
         RefPtr<ArrayBuffer> arrayBuffer = ArrayBuffer::create(bufferStart, byteLength);
         arrayBuffer->setDeallocationObserver(V8ArrayBufferDeallocationObserver::instanceTemplate());
         m_position += byteLength;
         return arrayBuffer.release();
     }
 
     bool readArrayBuffer(v8::Handle<v8::Value>* value)
     {
         RefPtr<ArrayBuffer> arrayBuffer = doReadArrayBuffer();
@@ skipping 156 matching lines @@
                 return false;
             fileList->append(file.release());
         }
         *value = toV8(fileList.release(), v8::Handle<v8::Object>(), m_isolate);
         return true;
     }
 
     PassRefPtr<File> doReadFileHelper()
     {
         if (m_version < 3)
-            return 0;
+            return nullptr;
         String path;
         String name;
         String relativePath;
         String uuid;
         String type;
         uint32_t hasSnapshot = 0;
         uint64_t size = 0;
         double lastModified = 0;
         if (!readWebCoreString(&path))
-            return 0;
+            return nullptr;
         if (m_version >= 4 && !readWebCoreString(&name))
-            return 0;
+            return nullptr;
         if (m_version >= 4 && !readWebCoreString(&relativePath))
-            return 0;
+            return nullptr;
         if (!readWebCoreString(&uuid))
-            return 0;
+            return nullptr;
         if (!readWebCoreString(&type))
-            return 0;
+            return nullptr;
         if (m_version >= 4 && !doReadUint32(&hasSnapshot))
-            return 0;
+            return nullptr;
         if (hasSnapshot) {
             if (!doReadUint64(&size))
-                return 0;
+                return nullptr;
             if (!doReadNumber(&lastModified))
-                return 0;
+                return nullptr;
         }
         return File::create(path, name, relativePath, hasSnapshot > 0, size, lastModified, getOrCreateBlobDataHandle(uuid, type));
     }
 
     template<class T>
     bool doReadUintHelper(T* value)
     {
         *value = 0;
         uint8_t currentByte;
         int shift = 0;
@@ skipping 504 matching lines @@
     // If the allocated memory was not registered before, then this class is likely
     // used in a context other then Worker's onmessage environment and the presence of
     // current v8 context is not guaranteed. Avoid calling v8 then.
     if (m_externallyAllocatedMemory) {
         ASSERT(v8::Isolate::GetCurrent());
         v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory(-m_externallyAllocatedMemory);
     }
 }
 
 } // namespace WebCore