Suppress webgl2 conformance test failure on Pixel 2.

Add rule for conformance/rendering/draw-arrays-out-of-bounds.html in
webgl2_conformance_gles_passthrough_tests to suppress failures.

Bug: 1143323
Change-Id: I190079d0c307e0dff987769ebb6e7b57e507dc7d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2514508
Commit-Queue: kylechar <kylechar@chromium.org>
Commit-Queue: Brian Sheedy <bsheedy@chromium.org>
Auto-Submit: kylechar <kylechar@chromium.org>
Reviewed-by: Brian Sheedy <bsheedy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#823315}

content/test/gpu/gpu_tests/test_expectations/webgl2_conformance_expectations.txt

@@ -938,6 +938,7 @@ crbug.com/1126631 [ android android-pixel-2 passthrough ] conformance2/textures/
 crbug.com/1126631 [ android android-pixel-2 passthrough ] conformance2/textures/webgl_canvas/tex-2d-rgb9_e5-rgb-half_float.html [ RetryOnFailure ]
 crbug.com/1126631 [ android android-pixel-2 passthrough ] conformance2/textures/webgl_canvas/tex-2d-r11f_g11f_b10f-rgb-unsigned_int_10f_11f_11f_rev.html [ RetryOnFailure ]
 crbug.com/1126631 [ android android-pixel-2 passthrough ] conformance/textures/webgl_canvas/tex-2d-luminance-luminance-unsigned_byte.html [ RetryOnFailure ]
+crbug.com/1143323 [ android android-pixel-2 passthrough ] conformance/rendering/draw-arrays-out-of-bounds.html [ Failure ]
 
 # This test is failing on Android Pixel 2 and 3 (Qualcomm)
 # Seems to be an OpenGL ES bug.