Begin tracking why layout is invalidated

Source/core/layout/TextAutosizer.cpp

Index: Source/core/layout/TextAutosizer.cpp
diff --git a/Source/core/layout/TextAutosizer.cpp b/Source/core/layout/TextAutosizer.cpp
index ffa92f2e2017fae2f753b4afb00c13d7ad2e518b..9291692765f51d0e88fddee52ea52c7c86103ea1 100644
--- a/Source/core/layout/TextAutosizer.cpp
+++ b/Source/core/layout/TextAutosizer.cpp
@@ -584,7 +584,7 @@ void TextAutosizer::setAllTextNeedsLayout()
     LayoutObject* renderer = m_document->layoutView();
     while (renderer) {
         if (renderer->isText())
-            renderer->setNeedsLayoutAndFullPaintInvalidation();
+            renderer->setNeedsLayoutAndFullPaintInvalidation(LayoutInvalidationReason::TextAutosizing);
         renderer = renderer->nextInPreOrder();
     }
 }
@@ -985,7 +985,7 @@ void TextAutosizer::applyMultiplier(LayoutObject* renderer, float multiplier, Re
         m_stylesRetainedDuringLayout.append(&currentStyle);
 
         renderer->setStyleInternal(style.release());
-        renderer->setNeedsLayoutAndFullPaintInvalidation();
+        renderer->setNeedsLayoutAndFullPaintInvalidation(LayoutInvalidationReason::TextAutosizing);
         break;
 
     case LayoutNeeded: