[CompositeAfterPaint] Rebaseline svg/clip-path/deep-nested-clip-in-mask.svg

CompositeAfterPaint no longer produces different result.
Remove the extra baseline, and the test passes.

TBR=wangxianzhu@chromium.org

Bug: 979369
Change-Id: I8da553bfcc71a4a08e7f4cb8a758fcf37f5107d1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2028736Reviewed-by: Xianzhu Wang <wangxianzhu@chromium.org>
Commit-Queue: Xianzhu Wang <wangxianzhu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#736574}

third_party/blink/web_tests/FlagExpectations/composite-after-paint

@@ -178,9 +178,6 @@ crbug.com/979380 fast/hidpi/scrollbar-appearance-increase-device-scale-factor.ht
 fast/multicol/composited-layer-will-change.html [ Crash ]
 paint/clipath/change-mask-clip-path-multicol-crash.html [ Crash ]
 
-# Clip-path and mask.
-crbug.com/979369 svg/clip-path/deep-nested-clip-in-mask.svg [ Failure ]
-
 # Animation failure related to direct property update
 crbug.com/1041013 external/wpt/web-animations/timing-model/animations/update-playback-rate-slow.html [ Failure ]
 crbug.com/1041013 external/wpt/web-animations/timing-model/animations/update-playback-rate-zero.html [ Failure ]