Oilpan: fix build after r356253.

third_party/WebKit/Source/platform/MemoryPurgeController.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 "platform/MemoryPurgeController.h"
 
 #include "platform/TraceEvent.h"
 #include "public/platform/Platform.h"
 #include "wtf/Partitions.h"
@@ skipping 10 matching lines @@
 DEFINE_TRACE(MemoryPurgeClient)
 {
 }
 
 MemoryPurgeController::MemoryPurgeController()
     : m_deviceKind(Platform::current()->isLowEndDeviceMode() ? DeviceKind::LowEnd : DeviceKind::NotSpecified)
     , m_inactiveTimer(this, &MemoryPurgeController::pageInactiveTask)
 {
 }
 
-DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(MemoryPurgeController);
+MemoryPurgeController::~MemoryPurgeController()
+{
+}
 
 void MemoryPurgeController::pageBecameActive()
 {
     m_inactiveTimer.stop();
 }
 
 void MemoryPurgeController::pageBecameInactive()
 {
     if (!m_inactiveTimer.isActive())
         m_inactiveTimer.startOneShot(kInactiveTimerIntervalInSecond, BLINK_FROM_HERE);
@@ skipping 13 matching lines @@
 }
 
 DEFINE_TRACE(MemoryPurgeController)
 {
 #if ENABLE(OILPAN)
     visitor->trace(m_clients);
 #endif
 }
 
 } // namespace blink