Stop searching for overhanging floats when the sibling's floats no longer overlap

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

 /*
  * Copyright (C) 2013 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 1791 matching lines @@
 
   // If |child| has moved up into previous siblings it needs to avoid or clear
   // any floats they contain.
   LayoutUnit oldLogicalHeight = logicalHeight();
   setLogicalHeight(logicalTop);
   while (previousBlockFlow) {
     auto lowestFloat = previousBlockFlow->logicalTop() +
                        previousBlockFlow->lowestFloatLogicalBottom();
     if (lowestFloat > logicalTop)
       addOverhangingFloats(previousBlockFlow, false);
+    else
+      break;
     LayoutObject* prev = previousBlockFlow->previousSibling();
     if (prev && prev->isLayoutBlockFlow())
       previousBlockFlow = toLayoutBlockFlow(prev);
     else
       previousBlockFlow = nullptr;
   }
   setLogicalHeight(oldLogicalHeight);
 
   if (previousBlockFlowCanSelfCollapse) {
     // If |child|'s previous sibling is or contains a self-collapsing block that
@@ skipping 2742 matching lines @@
   return LayoutBlock::invalidatePaintIfNeeded(paintInvalidationState);
 }
 
 void LayoutBlockFlow::invalidateDisplayItemClients(
     PaintInvalidationReason invalidationReason) const {
   BlockFlowPaintInvalidator(*this).invalidateDisplayItemClients(
       invalidationReason);
 }
 
 }  // namespace blink