Begin tracking why layout is invalidated

Source/core/layout/LayoutTextControlSingleLine.cpp

 /**
  * Copyright (C) 2006, 2007, 2010 Apple Inc. All rights reserved.
  *           (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
@@ skipping 97 matching lines @@
     // and type=search if the text height is taller than the contentHeight()
     // because of compability.
 
     LayoutBox* innerEditorRenderer = innerEditorElement()->layoutBox();
     bool innerEditorRendererHadLayout = innerEditorRenderer && innerEditorRenderer->needsLayout();
     LayoutBox* viewPortRenderer = editingViewPortElement() ? editingViewPortElement()->layoutBox() : 0;
 
     // To ensure consistency between layouts, we need to reset any conditionally overriden height.
     if (innerEditorRenderer && !innerEditorRenderer->styleRef().logicalHeight().isAuto()) {
         innerEditorRenderer->mutableStyleRef().setLogicalHeight(Length(Auto));
-        layoutScope.setNeedsLayout(innerEditorRenderer);
+        layoutScope.setNeedsLayout(innerEditorRenderer, LayoutInvalidationReason::TextControlChanged);
         HTMLElement* placeholderElement = inputElement()->placeholderElement();
         if (LayoutBox* placeholderBox = placeholderElement ? placeholderElement->layoutBox() : 0)
-            layoutScope.setNeedsLayout(placeholderBox);
+            layoutScope.setNeedsLayout(placeholderBox, LayoutInvalidationReason::TextControlChanged);
     }
     if (viewPortRenderer && !viewPortRenderer->styleRef().logicalHeight().isAuto()) {
         viewPortRenderer->mutableStyleRef().setLogicalHeight(Length(Auto));
-        layoutScope.setNeedsLayout(viewPortRenderer);
+        layoutScope.setNeedsLayout(viewPortRenderer, LayoutInvalidationReason::TextControlChanged);
     }
 
     LayoutBlockFlow::layoutBlock(false);
 
     Element* container = containerElement();
     LayoutBox* containerRenderer = container ? container->layoutBox() : 0;
 
     // Set the text block height
     LayoutUnit desiredLogicalHeight = textBlockLogicalHeight();
     LayoutUnit logicalHeightLimit = computeLogicalHeightLimit();
     if (innerEditorRenderer && innerEditorRenderer->logicalHeight() > logicalHeightLimit) {
         if (desiredLogicalHeight != innerEditorRenderer->logicalHeight())
-            layoutScope.setNeedsLayout(this);
+            layoutScope.setNeedsLayout(this, LayoutInvalidationReason::TextControlChanged);
 
         m_desiredInnerEditorLogicalHeight = desiredLogicalHeight;
 
         innerEditorRenderer->mutableStyleRef().setLogicalHeight(Length(desiredLogicalHeight, Fixed));
-        layoutScope.setNeedsLayout(innerEditorRenderer);
+        layoutScope.setNeedsLayout(innerEditorRenderer, LayoutInvalidationReason::TextControlChanged);
         if (viewPortRenderer) {
             viewPortRenderer->mutableStyleRef().setLogicalHeight(Length(desiredLogicalHeight, Fixed));
-            layoutScope.setNeedsLayout(viewPortRenderer);
+            layoutScope.setNeedsLayout(viewPortRenderer, LayoutInvalidationReason::TextControlChanged);
         }
     }
     // The container might be taller because of decoration elements.
     if (containerRenderer) {
         containerRenderer->layoutIfNeeded();
         LayoutUnit containerLogicalHeight = containerRenderer->logicalHeight();
         if (containerLogicalHeight > logicalHeightLimit) {
             containerRenderer->mutableStyleRef().setLogicalHeight(Length(logicalHeightLimit, Fixed));
-            layoutScope.setNeedsLayout(this);
+            layoutScope.setNeedsLayout(this, LayoutInvalidationReason::TextControlChanged);
         } else if (containerRenderer->logicalHeight() < contentLogicalHeight()) {
             containerRenderer->mutableStyleRef().setLogicalHeight(Length(contentLogicalHeight(), Fixed));
-            layoutScope.setNeedsLayout(this);
+            layoutScope.setNeedsLayout(this, LayoutInvalidationReason::TextControlChanged);
         } else {
             containerRenderer->mutableStyleRef().setLogicalHeight(Length(containerLogicalHeight, Fixed));
         }
     }
 
     // We ensure that the inner editor renderer is laid out at least once. This is
     // required as the logic below assumes that we don't carry over previous layout values.
     if (innerEditorRenderer && !innerEditorRendererHadLayout)
-        layoutScope.setNeedsLayout(innerEditorRenderer);
+        layoutScope.setNeedsLayout(innerEditorRenderer, LayoutInvalidationReason::TextControlChanged);
 
     // If we need another layout pass, we have changed one of children's height so we need to relayout them.
     if (needsLayout())
         LayoutBlockFlow::layoutBlock(true);
 
     // Center the child block in the block progression direction (vertical centering for horizontal text fields).
     if (!container && innerEditorRenderer && innerEditorRenderer->size().height() != contentLogicalHeight()) {
         LayoutUnit logicalHeightDiff = innerEditorRenderer->logicalHeight() - contentLogicalHeight();
         innerEditorRenderer->setLogicalTop(innerEditorRenderer->logicalTop() - (logicalHeightDiff / 2 + layoutMod(logicalHeightDiff, 2)));
     } else {
@@ skipping 61 matching lines @@
         viewPortRenderer->mutableStyleRef().setHeight(Length());
         viewPortRenderer->mutableStyleRef().setWidth(Length());
     }
     Element* container = containerElement();
     if (LayoutObject* containerRenderer = container ? container->layoutObject() : 0) {
         containerRenderer->mutableStyleRef().setHeight(Length());
         containerRenderer->mutableStyleRef().setWidth(Length());
     }
     LayoutObject* innerEditorRenderer = innerEditorElement()->layoutObject();
     if (innerEditorRenderer && diff.needsFullLayout())
-        innerEditorRenderer->setNeedsLayoutAndFullPaintInvalidation();
+        innerEditorRenderer->setNeedsLayoutAndFullPaintInvalidation(LayoutInvalidationReason::StyleChange);
     if (HTMLElement* placeholder = inputElement()->placeholderElement())
         placeholder->setInlineStyleProperty(CSSPropertyTextOverflow, textShouldBeTruncated() ? CSSValueEllipsis : CSSValueClip);
     setHasOverflowClip(false);
 }
 
 void LayoutTextControlSingleLine::capsLockStateMayHaveChanged()
 {
     if (!node())
         return;
 
@@ skipping 171 matching lines @@
     if (innerEditorElement())
         innerEditorElement()->setScrollTop(newTop);
 }
 
 HTMLInputElement* LayoutTextControlSingleLine::inputElement() const
 {
     return toHTMLInputElement(node());
 }
 
 }