Compile under-invalidation checking in all builds

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

Index: third_party/WebKit/Source/platform/graphics/paint/TransformDisplayItem.h
diff --git a/third_party/WebKit/Source/platform/graphics/paint/TransformDisplayItem.h b/third_party/WebKit/Source/platform/graphics/paint/TransformDisplayItem.h
index 0f366824b45c3d001b376011d42db806610eec2b..80f3e385621a84be85f50da1b7fb869b8a1fbde4 100644
--- a/third_party/WebKit/Source/platform/graphics/paint/TransformDisplayItem.h
+++ b/third_party/WebKit/Source/platform/graphics/paint/TransformDisplayItem.h
@@ -25,13 +25,11 @@ private:
 #ifndef NDEBUG
     void dumpPropertiesAsDebugString(WTF::StringBuilder&) const final;
 #endif
-#if ENABLE(ASSERT)
     bool equals(const DisplayItem& other) const final
     {
         return DisplayItem::equals(other)
             && m_transform == static_cast<const BeginTransformDisplayItem&>(other).m_transform;
     }
-#endif
 
     const AffineTransform m_transform;
 };