REGRESSION (r278121): Fix build failure due to weak external symbol

Occurs when building coverage+release builds:

    ERROR: symbol _DDHighlightCreateWithRectsInVisibleRectWithStyleScaleAndDirection

The soft-linked symbol was originally added in r259276.

* Configurations/WebCore.unexp:
- Add _DDHighlightCreateWithRectsInVisibleRectWithStyleScaleAndDirection
  to the list of unexported symbols.
- Also sort symbols in the group alphabetically.

Canonical link: https://commits.webkit.org/238481@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@278461 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Source/WebCore/ChangeLog

@@ -1,3 +1,18 @@
+2021-06-04  David Kilzer  <ddkilzer@apple.com>
+
+        REGRESSION (r278121): Fix build failure due to weak external symbol
+
+        Occurs when building coverage+release builds:
+
+            ERROR: symbol _DDHighlightCreateWithRectsInVisibleRectWithStyleScaleAndDirection
+
+        The soft-linked symbol was originally added in r259276.
+
+        * Configurations/WebCore.unexp:
+        - Add _DDHighlightCreateWithRectsInVisibleRectWithStyleScaleAndDirection
+          to the list of unexported symbols.
+        - Also sort symbols in the group alphabetically.
+
 2021-06-04  Michael Catanzaro  <mcatanzaro@gnome.org>
 
         Fix more GCC warnings

Source/WebCore/Configurations/WebCore.unexp

@@ -47,9 +47,10 @@ _VTPixelTransferSessionTransferImage
 _DDDFAScannerCreateFromCache
 _DDDFAScannerFirstResultInUnicharArray
 # Source/WebCore/page/mac/ServicesOverlayController.mm
-_DDHighlightGetLayerWithContext
-_DDHighlightGetBoundingRect
 _DDHighlightCreateWithRectsInVisibleRectWithStyleAndDirection
+_DDHighlightCreateWithRectsInVisibleRectWithStyleScaleAndDirection
+_DDHighlightGetBoundingRect
+_DDHighlightGetLayerWithContext
 _DDHighlightPointIsOnHighlight