Enable slimming paint for fast/repaint

LayoutTests/platform/linux/fast/repaint/line-overflow-expected.txt

Index: LayoutTests/platform/linux/fast/repaint/line-overflow-expected.txt
diff --git a/LayoutTests/platform/linux/fast/repaint/line-overflow-expected.txt b/LayoutTests/platform/linux/fast/repaint/line-overflow-expected.txt
index d34a5da16bc6c6ae1686916ca965874e588273a8..c90f45ac2b42b862fcf6342751d852c1978ea41e 100644
--- a/LayoutTests/platform/linux/fast/repaint/line-overflow-expected.txt
+++ b/LayoutTests/platform/linux/fast/repaint/line-overflow-expected.txt
@@ -12,6 +12,31 @@
         [47, 122, 33, 19],
         [47, 92, 33, 49],
         [8, 92, 200, 109]
+      ],
+      "paintInvalidationClients": [
+        "InlineTextBox 'enim in scelerisque convallis,'",
+        "RootInlineBox",
+        "InlineTextBox 'augue '",
+        "InlineTextBox 'purus'",
+        "InlineFlowBox",
+        "InlineTextBox ' eleifend'",
+        "RootInlineBox",
+        "InlineTextBox 'lacus, at sagittis eros leo pulvinar'",
+        "RootInlineBox",
+        "InlineTextBox 'velit. Integer sollicitudin nisi ut'",
+        "RootInlineBox",
+        "InlineTextBox 'urna blandit convallis.'",
+        "RootInlineBox",
+        "LayoutBlockFlow DIV",
+        "LayoutInline SPAN id='t'",
+        "InlineFlowBox",
+        "LayoutText #text",
+        "InlineTextBox 'purus'",
+        "LayoutText #text",
+        "InlineTextBox ' eleifend lacus, at'",
+        "InlineTextBox 'sagittis eros leo pulvinar velit.'",
+        "InlineTextBox 'Integer sollicitudin nisi ut urna'",
+        "InlineTextBox 'blandit convallis.'"
       ]
     }
   ]