[Bindings] Simplify V8PrivateProperty::Symbol methods

third_party/WebKit/Source/bindings/core/v8/V8MutationCallback.cpp

 /*
  * Copyright (C) 2013 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 24 matching lines @@
 #include "wtf/Assertions.h"
 
 namespace blink {
 
 V8MutationCallback::V8MutationCallback(v8::Local<v8::Function> callback,
                                        v8::Local<v8::Object> owner,
                                        ScriptState* scriptState)
     : m_callback(scriptState->isolate(), this, callback),
       m_scriptState(scriptState) {
   V8PrivateProperty::getMutationObserverCallback(scriptState->isolate())
-      .set(scriptState->context(), owner, callback);
+      .set(owner, callback);
 }
 
 V8MutationCallback::~V8MutationCallback() {}
 
 void V8MutationCallback::call(
     const HeapVector<Member<MutationRecord>>& mutations,
     MutationObserver* observer) {
   v8::Isolate* isolate = m_scriptState->isolate();
   ExecutionContext* executionContext = m_scriptState->getExecutionContext();
   if (!executionContext || executionContext->isContextSuspended() ||
@@ skipping 28 matching lines @@
 DEFINE_TRACE(V8MutationCallback) {
   MutationCallback::trace(visitor);
 }
 
 DEFINE_TRACE_WRAPPERS(V8MutationCallback) {
   visitor->traceWrappers(m_callback.cast<v8::Value>());
   MutationCallback::traceWrappers(visitor);
 }
 
 }  // namespace blink