Remove isolatesBlending from render tree dumps

LayoutTests/css3/compositing/mix-blend-mode-isolated-group-1-expected.txt

Index: LayoutTests/css3/compositing/mix-blend-mode-isolated-group-1-expected.txt
diff --git a/LayoutTests/css3/compositing/mix-blend-mode-isolated-group-1-expected.txt b/LayoutTests/css3/compositing/mix-blend-mode-isolated-group-1-expected.txt
index 192177bea847ac7ac947f375f3b27bee8e3046d7..295ae69418915128bb17c547fe6957faebdfdcaf 100644
--- a/LayoutTests/css3/compositing/mix-blend-mode-isolated-group-1-expected.txt
+++ b/LayoutTests/css3/compositing/mix-blend-mode-isolated-group-1-expected.txt
@@ -6,63 +6,63 @@ layer at (0,0) size 800x308
 layer at (28,28) size 60x60 transparent
   RenderBlock (floating) {DIV} at (20,20) size 60x60 [bgcolor=#EE82EE]
     RenderBlock {DIV} at (20,20) size 60x60 [bgcolor=#008000]
-layer at (128,28) size 60x60 transparent isolatesBlending
+layer at (128,28) size 60x60 transparent
   RenderBlock (floating) {DIV} at (120,20) size 60x60 [bgcolor=#EE82EE]
 layer at (148,48) size 60x60 blendMode: multiply
   RenderBlock {DIV} at (20,20) size 60x60 [bgcolor=#008000]
-layer at (228,28) size 60x60 transparent isolatesBlending
+layer at (228,28) size 60x60 transparent
   RenderBlock (floating) {DIV} at (220,20) size 60x60 [bgcolor=#EE82EE]
 layer at (248,48) size 60x60 blendMode: screen
   RenderBlock {DIV} at (20,20) size 60x60 [bgcolor=#008000]
-layer at (328,28) size 60x60 transparent isolatesBlending
+layer at (328,28) size 60x60 transparent
   RenderBlock (floating) {DIV} at (320,20) size 60x60 [bgcolor=#EE82EE]
 layer at (348,48) size 60x60 blendMode: overlay
   RenderBlock {DIV} at (20,20) size 60x60 [bgcolor=#008000]
-layer at (428,28) size 60x60 transparent isolatesBlending
+layer at (428,28) size 60x60 transparent
   RenderBlock (floating) {DIV} at (420,20) size 60x60 [bgcolor=#EE82EE]
 layer at (448,48) size 60x60 blendMode: darken
   RenderBlock {DIV} at (20,20) size 60x60 [bgcolor=#008000]
-layer at (528,28) size 60x60 transparent isolatesBlending
+layer at (528,28) size 60x60 transparent
   RenderBlock (floating) {DIV} at (520,20) size 60x60 [bgcolor=#EE82EE]
 layer at (548,48) size 60x60 blendMode: lighten
   RenderBlock {DIV} at (20,20) size 60x60 [bgcolor=#008000]
-layer at (628,28) size 60x60 transparent isolatesBlending
+layer at (628,28) size 60x60 transparent
   RenderBlock (floating) {DIV} at (620,20) size 60x60 [bgcolor=#EE82EE]
 layer at (648,48) size 60x60 blendMode: color-dodge
   RenderBlock {DIV} at (20,20) size 60x60 [bgcolor=#008000]
-layer at (28,128) size 60x60 transparent isolatesBlending
+layer at (28,128) size 60x60 transparent
   RenderBlock (floating) {DIV} at (20,120) size 60x60 [bgcolor=#EE82EE]
 layer at (48,148) size 60x60 blendMode: color-burn
   RenderBlock {DIV} at (20,20) size 60x60 [bgcolor=#008000]
-layer at (128,128) size 60x60 transparent isolatesBlending
+layer at (128,128) size 60x60 transparent
   RenderBlock (floating) {DIV} at (120,120) size 60x60 [bgcolor=#EE82EE]
 layer at (148,148) size 60x60 blendMode: hard-light
   RenderBlock {DIV} at (20,20) size 60x60 [bgcolor=#008000]
-layer at (228,128) size 60x60 transparent isolatesBlending
+layer at (228,128) size 60x60 transparent
   RenderBlock (floating) {DIV} at (220,120) size 60x60 [bgcolor=#EE82EE]
 layer at (248,148) size 60x60 blendMode: soft-light
   RenderBlock {DIV} at (20,20) size 60x60 [bgcolor=#008000]
-layer at (328,128) size 60x60 transparent isolatesBlending
+layer at (328,128) size 60x60 transparent
   RenderBlock (floating) {DIV} at (320,120) size 60x60 [bgcolor=#EE82EE]
 layer at (348,148) size 60x60 blendMode: difference
   RenderBlock {DIV} at (20,20) size 60x60 [bgcolor=#008000]
-layer at (428,128) size 60x60 transparent isolatesBlending
+layer at (428,128) size 60x60 transparent
   RenderBlock (floating) {DIV} at (420,120) size 60x60 [bgcolor=#EE82EE]
 layer at (448,148) size 60x60 blendMode: exclusion
   RenderBlock {DIV} at (20,20) size 60x60 [bgcolor=#008000]
-layer at (528,128) size 60x60 transparent isolatesBlending
+layer at (528,128) size 60x60 transparent
   RenderBlock (floating) {DIV} at (520,120) size 60x60 [bgcolor=#EE82EE]
 layer at (548,148) size 60x60 blendMode: hue
   RenderBlock {DIV} at (20,20) size 60x60 [bgcolor=#008000]
-layer at (628,128) size 60x60 transparent isolatesBlending
+layer at (628,128) size 60x60 transparent
   RenderBlock (floating) {DIV} at (620,120) size 60x60 [bgcolor=#EE82EE]
 layer at (648,148) size 60x60 blendMode: saturation
   RenderBlock {DIV} at (20,20) size 60x60 [bgcolor=#008000]
-layer at (28,228) size 60x60 transparent isolatesBlending
+layer at (28,228) size 60x60 transparent
   RenderBlock (floating) {DIV} at (20,220) size 60x60 [bgcolor=#EE82EE]
 layer at (48,248) size 60x60 blendMode: color
   RenderBlock {DIV} at (20,20) size 60x60 [bgcolor=#008000]
-layer at (128,228) size 60x60 transparent isolatesBlending
+layer at (128,228) size 60x60 transparent
   RenderBlock (floating) {DIV} at (120,220) size 60x60 [bgcolor=#EE82EE]
 layer at (148,248) size 60x60 blendMode: luminosity
   RenderBlock {DIV} at (20,20) size 60x60 [bgcolor=#008000]