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

third_party/WebKit/Source/core/page/DragController.cpp

 /*
  * Copyright (C) 2007, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Google Inc.
  *
  * 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 1132 matching lines @@
   } else if (state.m_dragType == DragSourceActionLink) {
     if (linkURL.isEmpty())
       return false;
     if (src->selection()
             .computeVisibleSelectionInDOMTreeDeprecated()
             .isCaret() &&
         src->selection().isContentEditable()) {
       // a user can initiate a drag on a link without having any text
       // selected.  In this case, we should expand the selection to
       // the enclosing anchor element
-      if (Node* node = enclosingAnchorElement(src->selection().base())) {
+      if (Node* node = enclosingAnchorElement(
+              src->selection()
+                  .computeVisibleSelectionInDOMTreeDeprecated()
+                  .base())) {
         src->selection().setSelection(
             SelectionInDOMTree::Builder().selectAllChildren(*node).build());
       }
     }
 
     if (!dragImage) {
       DCHECK(src->page());
       float screenDeviceScaleFactor =
           src->page()->chromeClient().screenInfo().deviceScaleFactor;
       dragImage = dragImageForLink(linkURL, hitTestResult.textContent(),
@@ skipping 80 matching lines @@
 
 DEFINE_TRACE(DragController) {
   visitor->trace(m_page);
   visitor->trace(m_documentUnderMouse);
   visitor->trace(m_dragInitiator);
   visitor->trace(m_dragState);
   visitor->trace(m_fileInputElementUnderMouse);
 }
 
 }  // namespace blink