fix names of suppresssed tests on win7

expectations/gm/ignored-tests.txt

Index: expectations/gm/ignored-tests.txt
diff --git a/expectations/gm/ignored-tests.txt b/expectations/gm/ignored-tests.txt
index de8c7a1215eaab59ac19a20c16eedb80d49fe243..8a34a77a32d94f1c184391c956ac67b86308eb74 100644
--- a/expectations/gm/ignored-tests.txt
+++ b/expectations/gm/ignored-tests.txt
@@ -46,23 +46,23 @@ matrixconvolution
 fontcache
 
 #humper: https://codereview.chromium.org/470233002/
-imagefilterscropexpand_565.png
-xfermodeimagefilter_565.png
-bitmapsource_8888.png
-imagefiltersscaled_565.png
-resizeimagefilter_8888.png
-resizeimagefilter_565.png
-imagefiltersclipped_565.png
-tileimagefilter_565.png
-displacement_8888.png
-imagefiltersscaled_8888.png
-xfermodeimagefilter_8888.png
-imagefiltersclipped_8888.png
-imagefilterscropexpand_8888.png
-offsetimagefilter_8888.png
-displacement_565.png
-bitmapsource_565.png
-tileimagefilter_8888.png
-imagefiltersgraph_8888.png
-offsetimagefilter_565.png
-imagefiltersgraph_565.png
+imagefilterscropexpand_565
+xfermodeimagefilter_565
+bitmapsource_8888
+imagefiltersscaled_565
+resizeimagefilter_8888
+resizeimagefilter_565
+imagefiltersclipped_565
+tileimagefilter_565
+displacement_8888
+imagefiltersscaled_8888
+xfermodeimagefilter_8888
+imagefiltersclipped_8888
+imagefilterscropexpand_8888
+offsetimagefilter_8888
+displacement_565
+bitmapsource_565
+tileimagefilter_8888
+imagefiltersgraph_8888
+offsetimagefilter_565
+imagefiltersgraph_565