Move a static member function hasRenderedNonAnonymousDescendantsWithHeight() out from PositionAlgori

Source/core/editing/commands/CompositeEditCommand.cpp

 /*
  * Copyright (C) 2005, 2006, 2007, 2008 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 923 matching lines @@
     if (comparePositions(pos, upstreamStart) < 0)
         return nullptr;
 
     // Perform some checks to see if we need to perform work in this function.
     if (isBlock(upstreamStart.anchorNode())) {
         // If the block is the root editable element, always move content to a new block,
         // since it is illegal to modify attributes on the root editable element for editing.
         if (upstreamStart.anchorNode() == editableRootForPosition(upstreamStart)) {
             // If the block is the root editable element and it contains no visible content, create a new
             // block but don't try and move content into it, since there's nothing for moveParagraphs to move.
-            if (!Position::hasRenderedNonAnonymousDescendantsWithHeight(upstreamStart.anchorNode()->layoutObject()))
+            if (!hasRenderedNonAnonymousDescendantsWithHeight(upstreamStart.anchorNode()->layoutObject()))
                 return insertNewDefaultParagraphElementAt(upstreamStart);
         } else if (isBlock(upstreamEnd.anchorNode())) {
             if (!upstreamEnd.anchorNode()->isDescendantOf(upstreamStart.anchorNode())) {
                 // If the paragraph end is a descendant of paragraph start, then we need to run
                 // the rest of this function. If not, we can bail here.
                 return nullptr;
             }
         } else if (enclosingBlock(upstreamEnd.anchorNode()) != upstreamStart.anchorNode()) {
             // It should be an ancestor of the paragraph start.
             // We can bail as we have a full block to work with.
@@ skipping 547 matching lines @@
 }
 
 DEFINE_TRACE(CompositeEditCommand)
 {
     visitor->trace(m_commands);
     visitor->trace(m_composition);
     EditCommand::trace(visitor);
 }
 
 } // namespace blink