Move the anonymous decoration to decoratedName.

LayoutTests/platform/win/fast/forms/plaintext-mode-2-expected.txt

Index: LayoutTests/platform/win/fast/forms/plaintext-mode-2-expected.txt
diff --git a/LayoutTests/platform/win/fast/forms/plaintext-mode-2-expected.txt b/LayoutTests/platform/win/fast/forms/plaintext-mode-2-expected.txt
index 37bbd34e5efea0bd5918f45f65ad5ee755191d86..864ff4e2f2ac918272258e60b652a5cf0166126a 100644
--- a/LayoutTests/platform/win/fast/forms/plaintext-mode-2-expected.txt
+++ b/LayoutTests/platform/win/fast/forms/plaintext-mode-2-expected.txt
@@ -27,11 +27,11 @@ layer at (0,0) size 800x600
           text run at (371,0) width 203: "All richness should be stripped."
       LayoutBlockFlow {OL} at (0,56) size 784x36
         LayoutListItem {LI} at (40,0) size 744x18
-          LayoutListMarker at (-20,0) size 16x17: "1"
+          LayoutListMarker (anonymous) at (-20,0) size 16x17: "1"
           LayoutText {#text} at (0,0) size 332x17
             text run at (0,0) width 332: "Success: document.execCommand(\"Copy\") == true"
         LayoutListItem {LI} at (40,18) size 744x18
-          LayoutListMarker at (-20,0) size 16x17: "2"
+          LayoutListMarker (anonymous) at (-20,0) size 16x17: "2"
           LayoutText {#text} at (0,0) size 331x17
             text run at (0,0) width 331: "Success: document.execCommand(\"Paste\") == true"
 layer at (10,11) size 596x16