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

third_party/WebKit/Source/core/editing/FrameSelection.cpp

 /*
  * Copyright (C) 2004, 2008, 2009, 2010 Apple 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:
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 957 matching lines @@
                                      RevealExtentOption revealExtentOption) {
   DCHECK(isAvailable());
 
   // TODO(editing-dev): The use of updateStyleAndLayoutIgnorePendingStylesheets
   // needs to be audited.  See http://crbug.com/590369 for more details.
   // Calculation of absolute caret bounds requires clean layout.
   document().updateStyleAndLayoutIgnorePendingStylesheets();
 
   LayoutRect rect;
 
-  switch (getSelectionType()) {
+  switch (computeVisibleSelectionInDOMTree().getSelectionType()) {
     case NoSelection:
       return;
     case CaretSelection:
       rect = LayoutRect(absoluteCaretBounds());
       break;
     case RangeSelection:
       rect = LayoutRect(
           revealExtentOption == RevealExtent
               ? absoluteCaretBoundsOf(createVisiblePosition(extent()))
               : enclosingIntRect(unclippedBounds()));
@@ skipping 191 matching lines @@
 }
 
 void showTree(const blink::FrameSelection* sel) {
   if (sel)
     sel->showTreeForThis();
   else
     LOG(INFO) << "Cannot showTree for <null> FrameSelection.";
 }
 
 #endif