Skip flaky ContextLost_WebGLContextLostFromSelectElement on Nexus 5X

Bug: 1064853
Change-Id: I01e2762b292147e655701af61a647206f0a88576
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2122849Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Peng Huang <penghuang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#753785}

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

@@ -34,6 +34,7 @@ crbug.com/965268 [ android qualcomm-adreno-(tm)-418 ] ContextLost_WebGLBlockedAf
 crbug.com/965268 [ android qualcomm-adreno-(tm)-418 ] ContextLost_WebGLUnblockedAfterUserInitiatedReload [ Skip ]
 crbug.com/880078 [ android ] ContextLost_WorkerRAFAfterGPUCrash [ Failure ]
 crbug.com/880078 [ android ] ContextLost_WorkerRAFAfterGPUCrash_OOPD [ Failure ]
+crbug.com/1064853 [ android qualcomm-adreno-(tm)-418 ] ContextLost_WebGLContextLostFromSelectElement [ Skip ]
 
 # Nexus 6
 # The Nexus 6 times out on these tests while waiting for the JS to complete