Helper for interesting things to do when a block becomes a float or out-of-flow.

third_party/WebKit/Source/core/layout/LayoutBlock.cpp

Index: third_party/WebKit/Source/core/layout/LayoutBlock.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutBlock.cpp b/third_party/WebKit/Source/core/layout/LayoutBlock.cpp
index 2ef3c37559e0d29a34041f50adb818f5bc5297d8..e9b689bbbf80f8effcc73acd9cdb9a70689b5ecb 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBlock.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutBlock.cpp
@@ -321,18 +321,8 @@ void LayoutBlock::styleDidChange(StyleDifference diff, const ComputedStyle* oldS
 {
     LayoutBox::styleDidChange(diff, oldStyle);
 
-    if (isFloatingOrOutOfFlowPositioned() && oldStyle && !oldStyle->isFloating() && !oldStyle->hasOutOfFlowPosition() && parent() && parent()->isLayoutBlockFlow()) {
-        toLayoutBlock(parent())->makeChildrenInlineIfPossible();
-        // Reparent to an adjacent anonymous block if one is available.
-        if (previousSibling() && previousSibling()->isAnonymousBlock()) {
-            LayoutBlock* newParent = toLayoutBlock(previousSibling());
-            toLayoutBlock(parent())->moveChildTo(newParent, this, nullptr, false);
-            // The anonymous block we've moved to may now be adjacent to former siblings of ours that it can contain also.
-            newParent->reparentSubsequentFloatingOrOutOfFlowSiblings();
-        } else if (nextSibling() && nextSibling()->isAnonymousBlock()) {
-            toLayoutBlock(parent())->moveChildTo(toLayoutBlock(nextSibling()), this, nextSibling()->slowFirstChild(), false);
-        }
-    }
+    if (isFloatingOrOutOfFlowPositioned() && oldStyle && !oldStyle->isFloating() && !oldStyle->hasOutOfFlowPosition() && parent() && parent()->isLayoutBlockFlow())
+        toLayoutBlockFlow(parent())->childBecameFloatingOrOutOfFlow(this);
 
     const ComputedStyle& newStyle = styleRef();