Begin tracking why layout is invalidated

Source/core/layout/LayoutRubyBase.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 54 matching lines @@
     ASSERT_ARG(toBase, toBase);
 
     if (beforeChild && beforeChild->parent() != this)
         beforeChild = splitAnonymousBoxesAroundChild(beforeChild);
 
     if (childrenInline())
         moveInlineChildren(toBase, beforeChild);
     else
         moveBlockChildren(toBase, beforeChild);
 
-    setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation();
-    toBase->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation();
+    setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation(LayoutInvalidationReason::Unknown);
+    toBase->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation(LayoutInvalidationReason::Unknown);
 }
 
 void LayoutRubyBase::moveInlineChildren(LayoutRubyBase* toBase, LayoutObject* beforeChild)
 {
     ASSERT(childrenInline());
     ASSERT_ARG(toBase, toBase);
 
     if (!firstChild())
         return;
 
@@ skipping 54 matching lines @@
         return;
 
     // Inset the ruby base by half the inter-ideograph expansion amount.
     float inset = (logicalWidth - maxPreferredLogicalWidth) / (expansionOpportunityCount + 1);
 
     logicalLeft += inset / 2;
     logicalWidth -= inset;
 }
 
 } // namespace blink