Remove ScriptValueSerializer::serializeNullValue.

third_party/WebKit/Source/bindings/core/v8/ScriptValueSerializer.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ScriptValueSerializer_h
 #define ScriptValueSerializer_h
 
 #include "base/gtest_prod_util.h"
 #include "bindings/core/v8/SerializationTag.h"
 #include "bindings/core/v8/SerializedScriptValue.h"
@@ skipping 216 matching lines @@
                         WebBlobInfoArray*,
                         ScriptState*);
   v8::Isolate* isolate() { return m_scriptState->isolate(); }
   v8::Local<v8::Context> context() { return m_scriptState->context(); }
 
   PassRefPtr<SerializedScriptValue> serialize(v8::Local<v8::Value>,
                                               Transferables*,
                                               ExceptionState&);
 
   static String serializeWTFString(const String&);
-  static String serializeNullValue();
 
  protected:
   class StateBase {
     USING_FAST_MALLOC(StateBase);
     WTF_MAKE_NONCOPYABLE(StateBase);
 
    public:
     virtual ~StateBase() {}
 
     // Link to the next state to form a stack.
@@ skipping 421 matching lines @@
   ArrayBufferContentsArray* m_arrayBufferContents;
   ImageBitmapContentsArray* m_imageBitmapContents;
   Vector<v8::Local<v8::Value>> m_arrayBuffers;
   Vector<v8::Local<v8::Value>> m_imageBitmaps;
   uint32_t m_version;
 };
 
 }  // namespace blink
 
 #endif  // ScriptValueSerializer_h