Clean up paint invalidation container logic for RenderText.

LayoutTests/fast/repaint/paint-invalidation-with-reparent-across-frame-boundaries-expected.txt

Index: LayoutTests/fast/repaint/paint-invalidation-with-reparent-across-frame-boundaries-expected.txt
diff --git a/LayoutTests/platform/win/svg/custom/js-late-clipPath-creation-expected.txt b/LayoutTests/fast/repaint/paint-invalidation-with-reparent-across-frame-boundaries-expected.txt
similarity index 53%
copy from LayoutTests/platform/win/svg/custom/js-late-clipPath-creation-expected.txt
copy to LayoutTests/fast/repaint/paint-invalidation-with-reparent-across-frame-boundaries-expected.txt
index 51aaa572b6aede1ca7d72bc5863dcb0f70fc8591..4d24aded4e0359f047b8b2e56b0173949b5e3a4a 100644
--- a/LayoutTests/platform/win/svg/custom/js-late-clipPath-creation-expected.txt
+++ b/LayoutTests/fast/repaint/paint-invalidation-with-reparent-across-frame-boundaries-expected.txt
@@ -1,3 +1,4 @@
+CONSOLE MESSAGE: line 12: [object HTMLDivElement]

[dsinclair, 2014/09/05 19:35:10]

This should go away when the console.log is removed.

[chrishtr, 2014/09/05 19:59:09]

Done.

 {
   "bounds": [800, 600],
   "children": [
@@ -6,11 +7,14 @@
       "contentsOpaque": true,
       "drawsContent": true,
       "repaintRects": [
-        [334, 40, 466, 168],
-        [334, 40, 466, 168],
-        [16, 40, 784, 168],
-        [16, 40, 318, 168],
-        [0, 0, 334, 500]
+        [18, 18, 284, 20],
+        [18, 18, 284, 20],
+        [18, 18, 284, 20],
+        [10, 18, 300, 28],
+        [8, 167, 784, 20],
+        [8, 167, 784, 20],
+        [8, 167, 784, 20],
+        [0, 175, 800, 20]

[chrishtr, 2014/09/04 22:34:41]

Without my CL, there would be an additional:

 [0, 0, 800, 600]

       ]
     }
   ]