Clean up expectations for animation helper tests.

LayoutTests/animations/3d/matrix-transform-type-animation-expected.txt

Index: LayoutTests/animations/3d/matrix-transform-type-animation-expected.txt
diff --git a/LayoutTests/animations/3d/matrix-transform-type-animation-expected.txt b/LayoutTests/animations/3d/matrix-transform-type-animation-expected.txt
index 2b415b1611cad479adb277db2f2c2a24394b604c..4ca87ee2130c6fd57be75c86775aa499d663500a 100644
--- a/LayoutTests/animations/3d/matrix-transform-type-animation-expected.txt
+++ b/LayoutTests/animations/3d/matrix-transform-type-animation-expected.txt
@@ -1,15 +1,2 @@
-layer at (0,0) size 800x600
-  RenderView at (0,0) size 800x600
-layer at (0,0) size 800x134
-  RenderBlock {HTML} at (0,0) size 800x134
-    RenderBody {BODY} at (8,8) size 784x118
-      RenderBlock {DIV} at (0,100) size 784x18
-        RenderText {#text} at (0,0) size 568x18
-          text run at (0,0) width 568: "PASS - \"webkitTransform.4\" property for \"box\" element at 1s saw something close to: 50"
-        RenderBR {BR} at (568,0) size 0x18
-layer at (8,8) size 784x100
-  RenderBlock (relative positioned) {DIV} at (0,0) size 784x100
-layer at (58,8) size 100x100
-  RenderBlock (positioned) {DIV} at (50,0) size 100x100 [bgcolor=#FF0000]
-layer at (8,8) size 100x100
-  RenderBlock (positioned) {DIV} at (0,0) size 100x100 [bgcolor=#008000]
+PASS - "webkitTransform.4" property for "box" element at 1s saw something close to: 50
+