Rename/move counter rendering code to layout.

LayoutTests/platform/mac/css2.1/t1202-counters-17-d-expected.txt

Index: LayoutTests/platform/mac/css2.1/t1202-counters-17-d-expected.txt
diff --git a/LayoutTests/platform/mac/css2.1/t1202-counters-17-d-expected.txt b/LayoutTests/platform/mac/css2.1/t1202-counters-17-d-expected.txt
index 51307bb7e84efb1bcb85d3296f2a09d11410fb18..f19327dc22a465220e164903eb6567256378afa8 100644
--- a/LayoutTests/platform/mac/css2.1/t1202-counters-17-d-expected.txt
+++ b/LayoutTests/platform/mac/css2.1/t1202-counters-17-d-expected.txt
@@ -9,23 +9,23 @@ layer at (0,0) size 800x88
       RenderBlock {DIV} at (0,32) size 784x16
         RenderInline {SPAN} at (0,0) size 34x16
           RenderInline {<pseudo:before>} at (0,0) size 34x16
-            RenderCounter at (0,0) size 20x16
+            LayoutCounter at (0,0) size 20x16
               text run at (0,0) width 20: "1.1"
             RenderTextFragment at (20,0) size 14x16
               text run at (20,0) width 14: " - "
         RenderInline {SPAN} at (0,0) size 30x16
           RenderInline {<pseudo:before>} at (0,0) size 30x16
-            RenderCounter at (33,0) size 17x16
+            LayoutCounter at (33,0) size 17x16
               text run at (33,0) width 17: "12"
             RenderTextFragment at (49,0) size 14x16
               text run at (49,0) width 14: " - "
         RenderInline {SPAN} at (0,0) size 124x16
           RenderInline {<pseudo:before>} at (0,0) size 124x16
-            RenderCounter at (62,0) size 21x16
+            LayoutCounter at (62,0) size 21x16
               text run at (62,0) width 21: "1.3"
             RenderTextFragment at (82,0) size 50x16
               text run at (82,0) width 50: "--       --"
-            RenderCounter at (131,0) size 55x16
+            LayoutCounter at (131,0) size 55x16
               text run at (131,0) width 55: "1-------3"
       RenderBlock {DIV} at (0,48) size 784x16
         RenderText {#text} at (0,0) size 186x16