Add png for difficult but common blit cases.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1973583002

Review-Url: https://codereview.chromium.org/1973583002
diff --git a/resources/iconstrip.png b/resources/iconstrip.png
new file mode 100644
index 0000000..10be277
--- /dev/null
+++ b/resources/iconstrip.png
Binary files differ