Enable slimming paint for fast/repaint

LayoutTests/platform/linux/fast/repaint/bugzilla-5699-expected.txt

Index: LayoutTests/platform/linux/fast/repaint/bugzilla-5699-expected.txt
diff --git a/LayoutTests/platform/linux/fast/repaint/bugzilla-5699-expected.txt b/LayoutTests/platform/linux/fast/repaint/bugzilla-5699-expected.txt
index cbaaabc44cf93800e0a6be40031961278e9c2ef4..353402287225158dc6777282ba0d8e8c7cd14f8b 100644
--- a/LayoutTests/platform/linux/fast/repaint/bugzilla-5699-expected.txt
+++ b/LayoutTests/platform/linux/fast/repaint/bugzilla-5699-expected.txt
@@ -13,6 +13,23 @@
         [8, 150, 4, 19],
         [8, 136, 784, 67],
         [8, 136, 4, 19]
+      ],
+      "paintInvalidationClients": [
+        "InlineTextBox ''",
+        "InlineTextBox '\n'",
+        "RootInlineBox",
+        "LayoutBlockFlow P",
+        "LayoutBlockFlow P",
+        "LayoutInline SPAN id='d'",
+        "InlineFlowBox",
+        "LayoutText #text",
+        "InlineTextBox '\u00A0'",
+        "LayoutBR BR",
+        "InlineTextBox '\n'",
+        "LayoutText #text",
+        "InlineTextBox 'Hello'",
+        "LayoutBR BR",
+        "InlineTextBox '\n'"
       ]
     }
   ]