Deflake css3/filter/effect layout tests

third_party/WebKit/LayoutTests/platform/mac/css3/filters/effect-brightness-hw-expected.txt

Index: third_party/WebKit/LayoutTests/platform/mac/css3/filters/effect-brightness-hw-expected.txt
diff --git a/third_party/WebKit/LayoutTests/platform/mac/css3/filters/effect-brightness-hw-expected.txt b/third_party/WebKit/LayoutTests/platform/mac/css3/filters/effect-brightness-hw-expected.txt
index 0b04f481b74298401130afb38150bbe636aadef2..f9416fffd26f140477aaebe6d8698dc380254d1d 100644
--- a/third_party/WebKit/LayoutTests/platform/mac/css3/filters/effect-brightness-hw-expected.txt
+++ b/third_party/WebKit/LayoutTests/platform/mac/css3/filters/effect-brightness-hw-expected.txt
@@ -16,17 +16,31 @@ layer at (0,0) size 800x600
       LayoutText {#text} at (324,170) size 4x18
         text run at (324,170) width 4: " "
       LayoutText {#text} at (0,0) size 0x0
-layer at (8,8) size 160x90
-  LayoutImage {IMG} at (0,0) size 160x90
-layer at (172,8) size 160x90
-  LayoutImage {IMG} at (164,0) size 160x90
-layer at (336,8) size 160x90
-  LayoutImage {IMG} at (328,0) size 160x90
-layer at (500,8) size 160x90
-  LayoutImage {IMG} at (492,0) size 160x90
-layer at (8,102) size 160x90
-  LayoutImage {IMG} at (0,94) size 160x90
-layer at (172,102) size 160x90
-  LayoutImage {IMG} at (164,94) size 160x90
-layer at (336,102) size 160x90
-  LayoutImage {IMG} at (328,94) size 160x90
+layer at (8,8) size 160x90 scrollWidth 256 scrollHeight 128
+  LayoutBlockFlow {DIV} at (0,0) size 160x90
+layer at (172,8) size 160x90 scrollWidth 256 scrollHeight 128
+  LayoutBlockFlow {DIV} at (164,0) size 160x90
+layer at (336,8) size 160x90 scrollWidth 256 scrollHeight 128
+  LayoutBlockFlow {DIV} at (328,0) size 160x90
+layer at (500,8) size 160x90 scrollWidth 256 scrollHeight 128
+  LayoutBlockFlow {DIV} at (492,0) size 160x90
+layer at (8,102) size 160x90 scrollWidth 256 scrollHeight 128
+  LayoutBlockFlow {DIV} at (0,94) size 160x90
+layer at (172,102) size 160x90 scrollWidth 256 scrollHeight 128
+  LayoutBlockFlow {DIV} at (164,94) size 160x90
+layer at (336,102) size 160x90 scrollWidth 256 scrollHeight 128
+  LayoutBlockFlow {DIV} at (328,94) size 160x90
+layer at (8,8) size 256x128 backgroundClip at (8,8) size 160x90 clip at (8,8) size 160x90
+  LayoutImage {IMG} at (0,0) size 256x128
+layer at (172,8) size 256x128 backgroundClip at (172,8) size 160x90 clip at (172,8) size 160x90
+  LayoutImage {IMG} at (0,0) size 256x128
+layer at (336,8) size 256x128 backgroundClip at (336,8) size 160x90 clip at (336,8) size 160x90
+  LayoutImage {IMG} at (0,0) size 256x128
+layer at (500,8) size 256x128 backgroundClip at (500,8) size 160x90 clip at (500,8) size 160x90
+  LayoutImage {IMG} at (0,0) size 256x128
+layer at (8,102) size 256x128 backgroundClip at (8,102) size 160x90 clip at (8,102) size 160x90
+  LayoutImage {IMG} at (0,0) size 256x128
+layer at (172,102) size 256x128 backgroundClip at (172,102) size 160x90 clip at (172,102) size 160x90
+  LayoutImage {IMG} at (0,0) size 256x128
+layer at (336,102) size 256x128 backgroundClip at (336,102) size 160x90 clip at (336,102) size 160x90
+  LayoutImage {IMG} at (0,0) size 256x128