Replace ENABLE(ASSERT) with DCHECK_IS_ON().

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

 // 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.
 
 #include "bindings/core/v8/ScriptFunction.h"
 
 #include "bindings/core/v8/V8Binding.h"
 
 namespace blink {
 
 v8::Local<v8::Function> ScriptFunction::bindToV8Function() {
-#if ENABLE(ASSERT)
+#if DCHECK_IS_ON()
   DCHECK(!m_bindToV8FunctionAlreadyCalled);
   m_bindToV8FunctionAlreadyCalled = true;
 #endif
 
   v8::Isolate* isolate = m_scriptState->isolate();
   v8::Local<v8::External> wrapper = v8::External::New(isolate, this);
   m_scriptState->world().registerDOMObjectHolder(isolate, this, wrapper);
   return v8::Function::New(m_scriptState->context(), callCallback, wrapper, 0,
                            v8::ConstructorBehavior::kThrow)
       .ToLocalChecked();
 }
 
 void ScriptFunction::callCallback(
     const v8::FunctionCallbackInfo<v8::Value>& args) {
   ASSERT(args.Data()->IsExternal());
   ScriptFunction* scriptFunction = static_cast<ScriptFunction*>(
       v8::Local<v8::External>::Cast(args.Data())->Value());
   ScriptValue result = scriptFunction->call(
       ScriptValue(scriptFunction->getScriptState(), args[0]));
   v8SetReturnValue(args, result.v8Value());
 }
 
 }  // namespace blink