Replace tests of ASSERT_ENABLED with ENABLE(ASSERT).

Source/core/page/Page.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All Rights Reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 414 matching lines @@
         if (frame->isLocalFrame() && toLocalFrame(frame)->document())
             toLocalFrame(frame)->document()->didChangeTimerAlignmentInterval();
     }
 }
 
 double Page::timerAlignmentInterval() const
 {
     return m_timerAlignmentInterval;
 }
 
-#if ASSERT_ENABLED
+#if ENABLE(ASSERT)
 void Page::checkSubframeCountConsistency() const
 {
     ASSERT(m_subframeCount >= 0);
 
     int subframeCount = 0;
     for (Frame* frame = mainFrame(); frame; frame = frame->tree().traverseNext())
         ++subframeCount;
 
     ASSERT(m_subframeCount + 1 == subframeCount);
 }
@@ skipping 208 matching lines @@
     , spellCheckerClient(0)
     , storageClient(0)
 {
 }
 
 Page::PageClients::~PageClients()
 {
 }
 
 } // namespace WebCore