Suppress ContextLost_WebGLContextLostFromQuantity on Fuchsia

Flaky timeout.

TBR=bsheedy

Bug: 1122373
Change-Id: I5a10681d5d0bc5dea24c168c9c27e254623cdce9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2382409
Commit-Queue: Yuly Novikov <ynovikov@chromium.org>
Reviewed-by: Brian Sheedy <bsheedy@chromium.org>
Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#802842}

content/test/gpu/gpu_tests/test_expectations/context_lost_expectations.txt

@@ -62,5 +62,6 @@ crbug.com/1078566 [ android ] GpuNormalTermination_NewWebGLNotBlocked [ Skip ]
 
 # Flaky on Fuchsia.
 crbug.com/1105308 [ fuchsia ] ContextLost_WebGLContextLostFromGPUProcessExit [ Skip ]
+crbug.com/1122373 [ fuchsia ] ContextLost_WebGLContextLostFromQuantity [ Skip ]
 crbug.com/1105308 [ fuchsia ] ContextLost_WebGLBlockedAfterJSNavigation [ Skip ]
 crbug.com/1105308 [ fuchsia ] GpuNormalTermination_NewWebGLNotBlocked [ Skip ]