Begin tracking why layout is invalidated

Source/core/layout/svg/LayoutSVGInlineText.cpp

 /*
  * Copyright (C) 2006 Oliver Hunt <ojh16@student.canterbury.ac.nz>
  * Copyright (C) 2006 Apple Computer Inc.
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2008 Rob Buis <buis@kde.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 72 matching lines @@
     if (oldPreserves != newPreserves) {
         setText(originalText(), true);
         return;
     }
 
     if (!diff.needsFullLayout())
         return;
 
     // The text metrics may be influenced by style changes.
     if (LayoutSVGText* textLayoutObject = LayoutSVGText::locateLayoutSVGTextAncestor(this))
-        textLayoutObject->setNeedsLayoutAndFullPaintInvalidation();
+        textLayoutObject->setNeedsLayoutAndFullPaintInvalidation(LayoutInvalidationReason::StyleChange);
 }
 
 InlineTextBox* LayoutSVGInlineText::createTextBox(int start, unsigned short length)
 {
     InlineTextBox* box = new SVGInlineTextBox(*this, start, length);
     box->setHasVirtualLogicalHeight();
     return box;
 }
 
 LayoutRect LayoutSVGInlineText::localCaretRect(InlineBox* box, int caretOffset, LayoutUnit*)
@@ skipping 140 matching lines @@
 
 PassRefPtr<StringImpl> LayoutSVGInlineText::originalText() const
 {
     RefPtr<StringImpl> result = LayoutText::originalText();
     if (!result)
         return nullptr;
     return applySVGWhitespaceRules(result, style() && style()->whiteSpace() == PRE);
 }
 
 }