Enable slimming paint for fast/repaint

LayoutTests/platform/mac/virtual/slimmingpaint/fast/repaint/line-overflow-expected.txt

Index: LayoutTests/platform/mac/virtual/slimmingpaint/fast/repaint/line-overflow-expected.txt
diff --git a/LayoutTests/platform/mac/virtual/slimmingpaint/fast/repaint/line-overflow-expected.txt b/LayoutTests/platform/mac/virtual/slimmingpaint/fast/repaint/line-overflow-expected.txt
deleted file mode 100644
index c94bd815c91b3e1c59b86a1d872079670b30241f..0000000000000000000000000000000000000000
--- a/LayoutTests/platform/mac/virtual/slimmingpaint/fast/repaint/line-overflow-expected.txt
+++ /dev/null
@@ -1,46 +0,0 @@
-{
-  "bounds": [800, 600],
-  "children": [
-    {
-      "bounds": [800, 600],
-      "contentsOpaque": true,
-      "drawsContent": true,
-      "repaintRects": [
-        [116, 84, 36, 48],
-        [115, 114, 37, 18],
-        [38, 132, 36, 18],
-        [38, 132, 36, 18],
-        [8, 132, 192, 72],
-        [8, 114, 200, 90],
-        [8, 84, 200, 120]
-      ],
-      "paintInvalidationClients": [
-        "InlineTextBox 'convallis,\n'",
-        "InlineTextBox 'augue'",
-        "RootInlineBox",
-        "InlineTextBox 'purus'",
-        "InlineFlowBox",
-        "InlineTextBox ' eleifend lacus,'",
-        "RootInlineBox",
-        "InlineTextBox 'at sagittis eros leo pulvinar'",
-        "RootInlineBox",
-        "InlineTextBox 'velit. Integer sollicitudin nisi'",
-        "RootInlineBox",
-        "InlineTextBox 'ut urna blandit convallis.'",
-        "RootInlineBox",
-        "LayoutBlockFlow DIV",
-        "LayoutInline SPAN id='t'",
-        "InlineFlowBox",
-        "LayoutText #text",
-        "InlineTextBox 'purus'",
-        "LayoutText #text",
-        "InlineTextBox ' eleifend'",
-        "InlineTextBox 'lacus, at sagittis eros leo'",
-        "InlineTextBox 'pulvinar velit. Integer'",
-        "InlineTextBox 'sollicitudin nisi ut urna blandit'",
-        "InlineTextBox 'convallis.'"
-      ]
-    }
-  ]
-}
-