Compile under-invalidation checking in all builds

third_party/WebKit/Source/platform/graphics/paint/CompositingDisplayItem.h

 // 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.
 
 #ifndef CompositingDisplayItem_h
 #define CompositingDisplayItem_h
 
 #include "platform/geometry/FloatRect.h"
 #include "platform/graphics/GraphicsTypes.h"
 #include "platform/graphics/paint/DisplayItem.h"
@@ skipping 17 matching lines @@
             m_bounds = FloatRect(*bounds);
     }
 
     void replay(GraphicsContext&) const override;
     void appendToWebDisplayItemList(const IntRect&, WebDisplayItemList*) const override;
 
 private:
 #ifndef NDEBUG
     void dumpPropertiesAsDebugString(WTF::StringBuilder&) const override;
 #endif
-#if ENABLE(ASSERT)
     bool equals(const DisplayItem& other) const final
     {
         return DisplayItem::equals(other)
             && m_xferMode == static_cast<const BeginCompositingDisplayItem&>(other).m_xferMode
             && m_opacity == static_cast<const BeginCompositingDisplayItem&>(other).m_opacity
             && m_hasBounds == static_cast<const BeginCompositingDisplayItem&>(other).m_hasBounds
             && m_bounds == static_cast<const BeginCompositingDisplayItem&>(other).m_bounds
             && m_colorFilter == static_cast<const BeginCompositingDisplayItem&>(other).m_colorFilter;
     }
-#endif
 
     const SkXfermode::Mode m_xferMode;
     const float m_opacity;
     bool m_hasBounds;
     FloatRect m_bounds;
     ColorFilter m_colorFilter;
 };
 
 class PLATFORM_EXPORT EndCompositingDisplayItem final : public PairedEndDisplayItem {
 public:
     EndCompositingDisplayItem(const DisplayItemClient& client)
         : PairedEndDisplayItem(client, kEndCompositing, sizeof(*this)) { }
 
     void replay(GraphicsContext&) const override;
     void appendToWebDisplayItemList(const IntRect&, WebDisplayItemList*) const override;
 
 private:
 #if ENABLE(ASSERT)
     bool isEndAndPairedWith(DisplayItem::Type otherType) const final { return otherType == kBeginCompositing; }
 #endif
 };
 
 } // namespace blink
 
 #endif // CompositingDisplayItem_h