Expand FrameSeleciton::start() to increase chances of hoisting update layout

third_party/WebKit/Source/core/editing/spellcheck/SpellChecker.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 1031 matching lines @@
       node = node->nextSibling();
   }
 
   return 0;
 }
 
 bool SpellChecker::selectionStartHasMarkerFor(
     DocumentMarker::MarkerType markerType,
     int from,
     int length) const {
-  Node* node = findFirstMarkable(frame().selection().start().anchorNode());
+  Node* node =
+      findFirstMarkable(frame()
+                            .selection()
+                            .computeVisibleSelectionInDOMTreeDeprecated()
+                            .start()
+                            .anchorNode());
   if (!node)
     return false;
 
   unsigned startOffset = static_cast<unsigned>(from);
   unsigned endOffset = static_cast<unsigned>(from + length);
   DocumentMarkerVector markers = frame().document()->markers().markersFor(node);
   for (size_t i = 0; i < markers.size(); ++i) {
     DocumentMarker* marker = markers[i];
     if (marker->startOffset() <= startOffset &&
         endOffset <= marker->endOffset() && marker->type() == markerType)
@@ skipping 150 matching lines @@
         startOfNextParagraph(createVisiblePosition(paragraphEnd));
     paragraphStart = newParagraphStart.toParentAnchoredPosition();
     paragraphEnd = endOfParagraph(newParagraphStart).toParentAnchoredPosition();
     firstIteration = false;
     totalLengthProcessed += currentLength;
   }
   return std::make_pair(firstFoundItem, firstFoundOffset);
 }
 
 }  // namespace blink