tools/perf: Disable rendering.mobile/microgame_fps on android pixel2

Change-Id: I4cfb20bd12e93c84bddb0ff7920e718c0fc03fc4
No-Try: True
Tbr: wenbinzhang@google.com
Bug: 1166558
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2626299Reviewed-by: Eric Seckler <eseckler@chromium.org>
Commit-Queue: Eric Seckler <eseckler@chromium.org>
Cr-Commit-Position: refs/heads/master@{#843462}

tools/perf/expectations.config

@@ -254,6 +254,7 @@ crbug.com/1160628 [ android-pixel-2 ] rendering.mobile/idle_power_css_animation
 crbug.com/1160628 [ android-pixel-2 ] rendering.mobile/idle_power_request_animation_frame [ Skip ]
 crbug.com/1160628 [ android-pixel-2 ] rendering.mobile/idle_power_set_timeout_long [ Skip ]
 crbug.com/1160628 [ android-pixel-2 ] rendering.mobile/idle_power_set_timetout [ Skip ]
+crbug.com/1166558 [ android-pixel-2 ] rendering.mobile/microgame_fps [ Skip ]
 
 # Benchmark: rasterize_and_record_micro.top_25
 crbug.com/764543 rasterize_and_record_micro.top_25/file://static_top_25/wikipedia.html [ Skip ]