Revert of Compile under-invalidation checking in all builds

third_party/WebKit/Source/platform/graphics/paint/ForeignLayerDisplayItem.cpp

 // Copyright 2016 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 "platform/graphics/paint/ForeignLayerDisplayItem.h"
 
 #include "cc/layers/layer.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/paint/PaintController.h"
 #include "public/platform/WebLayer.h"
@@ skipping 28 matching lines @@
 void ForeignLayerDisplayItem::appendToWebDisplayItemList(const IntRect&, WebDisplayItemList*) const
 {
     ASSERT_NOT_REACHED();
 }
 
 bool ForeignLayerDisplayItem::drawsContent() const
 {
     return true;
 }
 
+#if ENABLE(ASSERT)
 bool ForeignLayerDisplayItem::equals(const DisplayItem& other) const
 {
     return DisplayItem::equals(other)
         && m_layer == static_cast<const ForeignLayerDisplayItem&>(other).m_layer;
 }
+#endif // ENABLE(ASSERT)
 
 #ifndef NDEBUG
 void ForeignLayerDisplayItem::dumpPropertiesAsDebugString(StringBuilder& stringBuilder) const
 {
     DisplayItem::dumpPropertiesAsDebugString(stringBuilder);
     stringBuilder.append(String::format(", layer: %d", m_layer->id()));
 }
 #endif // NDEBUG
 
 void recordForeignLayer(GraphicsContext& context,
     const DisplayItemClient& client, DisplayItem::Type type,
     WebLayer* webLayer, const FloatPoint& location, const IntSize& bounds)
 {
     PaintController& paintController = context.getPaintController();
     if (paintController.displayItemConstructionIsDisabled())
         return;
 
     paintController.createAndAppend<ForeignLayerDisplayItem>(client, type, webLayer->ccLayer(), location, bounds);
 }
 
 } // namespace blink