Disable rendering.mobile/canvas_animation_no_clear on android nexus 5x.

NOTRY=true
TBR=crouleau@chromium.org
CC=sadrul@chromium.org,vmiura@chromium.org
BUG=1039344

Change-Id: Ib4d1567010f972ad1d58305f2d17d0430e45039f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1985677Reviewed-by: Stephen Nusko <nuskos@chromium.org>
Commit-Queue: Stephen Nusko <nuskos@chromium.org>
Auto-Submit: Stephen Nusko <nuskos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#728567}

tools/perf/expectations.config

@@ -281,7 +281,7 @@ crbug.com/1036357 [ android-nexus-5 ] rendering.mobile/balls_svg_animations [ Sk
 crbug.com/1039281 [ android ] rendering.mobile/linkedin_mobile_2018 [ Skip ]
 crbug.com/1039281 [ android ] rendering.mobile/linkedin_mobile_pinch_2018 [ Skip ]
 crbug.com/1039281 [ android ] rendering.mobile/linkedin_pathological_2018 [ Skip ]
-
+crbug.com/1039344 [ android-nexus-5x android-webview ] rendering.mobile/canvas_animation_no_clear [ Skip ]
 
 # Benchmark: rasterize_and_record_micro.top_25
 crbug.com/764543 rasterize_and_record_micro.top_25/file://static_top_25/wikipedia.html [ Skip ]