Revert FCM text-based-repaint change and rebaselines

LayoutTests/platform/mac/fast/repaint/positioned-document-element-expected.txt

Index: LayoutTests/platform/mac/fast/repaint/positioned-document-element-expected.txt
diff --git a/LayoutTests/platform/mac/fast/repaint/positioned-document-element-expected.txt b/LayoutTests/platform/mac/fast/repaint/positioned-document-element-expected.txt
index ddfbe1083c2fa928cc59e4e44b26acfe4da907a9..7d0345c03cade2f0e4a722f503240da1015fa7e1 100644
--- a/LayoutTests/platform/mac/fast/repaint/positioned-document-element-expected.txt
+++ b/LayoutTests/platform/mac/fast/repaint/positioned-document-element-expected.txt
@@ -1,23 +1,13 @@
 Tests that the entire viewport is painted with a floated html element.
 
-(GraphicsLayer
-  (bounds 800.00 600.00)
-  (children 1
-    (GraphicsLayer
-      (bounds 800.00 600.00)
-      (contentsOpaque 1)
-      (drawsContent 1)
-      (repaint rects
-        (rect 0.00 0.00 800.00 600.00)
-        (rect 0.00 0.00 800.00 50.00)
-        (rect 0.00 0.00 800.00 50.00)
-        (rect 108.00 16.00 692.00 18.00)
-        (rect 108.00 16.00 425.00 18.00)
-        (rect 533.00 16.00 267.00 18.00)
-        (rect 0.00 0.00 800.00 50.00)
-        (rect 100.00 100.00 441.00 50.00)
-      )
-    )
-  )
+(repaint rects
+  (rect 0 0 800 600)
+  (rect 0 0 800 50)
+  (rect 0 0 800 50)
+  (rect 108 16 784 18)
+  (rect 108 16 425 18)
+  (rect 533 16 359 18)
+  (rect 0 0 800 50)
+  (rect 100 100 441 50)
 )