Oilpan: remove unnecessary ENABLE(OILPAN) protections of trace() calls.

Source/modules/compositorworker/CompositorWorkerGlobalScope.cpp

 // Copyright 2015 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 "config.h"
 #include "modules/compositorworker/CompositorWorkerGlobalScope.h"
 
 #include "bindings/core/v8/SerializedScriptValue.h"
 #include "core/workers/WorkerObjectProxy.h"
 #include "core/workers/WorkerThreadStartupData.h"
@@ skipping 16 matching lines @@
     , m_callbackCollection(this)
 {
 }
 
 CompositorWorkerGlobalScope::~CompositorWorkerGlobalScope()
 {
 }
 
 DEFINE_TRACE(CompositorWorkerGlobalScope)
 {
-#if ENABLE(OILPAN)
     visitor->trace(m_callbackCollection);
-#endif
     WorkerGlobalScope::trace(visitor);
 }
 
 const AtomicString& CompositorWorkerGlobalScope::interfaceName() const
 {
     return EventTargetNames::CompositorWorkerGlobalScope;
 }
 
 void CompositorWorkerGlobalScope::postMessage(ExecutionContext* executionContext, PassRefPtr<SerializedScriptValue> message, const MessagePortArray* ports, ExceptionState& exceptionState)
 {
@@ skipping 18 matching lines @@
 {
     m_callbackCollection.executeCallbacks(highResTimeNow, highResTimeNow);
 }
 
 CompositorWorkerThread* CompositorWorkerGlobalScope::thread() const
 {
     return static_cast<CompositorWorkerThread*>(WorkerGlobalScope::thread());
 }
 
 } // namespace blink