Start removing the double-negative !ASSERT_DISABLED

Source/core/rendering/compositing/CompositingInputsUpdater.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 "config.h"
 #include "core/rendering/compositing/CompositingInputsUpdater.h"
 
 #include "core/rendering/RenderBlock.h"
 #include "core/rendering/RenderLayer.h"
 #include "core/rendering/compositing/CompositedLayerMapping.h"
@@ skipping 60 matching lines @@
         info.ancestorScrollingLayer = layer;
 
     for (RenderLayer* child = layer->firstChild(); child; child = child->nextSibling())
         update(child, updateType, info);
 
     m_geometryMap.popMappingsToAncestor(layer->parent());
 
     layer->clearChildNeedsCompositingInputsUpdate();
 }
 
-#if !ASSERT_DISABLED
+#if ASSERT_ENABLED
 
 void CompositingInputsUpdater::assertNeedsCompositingInputsUpdateBitsCleared(RenderLayer* layer)
 {
     ASSERT(!layer->childNeedsCompositingInputsUpdate());
     ASSERT(!layer->needsCompositingInputsUpdate());
 
     for (RenderLayer* child = layer->firstChild(); child; child = child->nextSibling())
         assertNeedsCompositingInputsUpdateBitsCleared(child);
 }
 
 #endif
 
 } // namespace WebCore