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

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

Index: third_party/WebKit/Source/core/page/DragController.cpp
diff --git a/third_party/WebKit/Source/core/page/DragController.cpp b/third_party/WebKit/Source/core/page/DragController.cpp
index 9483dab469c5f2a40082349255947b8dff86d795..313bd9881ee4afa09cec937fce14ed149421d3cf 100644
--- a/third_party/WebKit/Source/core/page/DragController.cpp
+++ b/third_party/WebKit/Source/core/page/DragController.cpp
@@ -1150,7 +1150,10 @@ bool DragController::startDrag(LocalFrame* src,
       // 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());
       }