gpu: Add retry on failure expectation for flaky Nexus 9 android tests.

TBR=kbr@chromium.org

Bug: 1090407
Change-Id: I3f1ebaf5d684a11e47ad93e4035e0afd6c995c10
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2227396
Commit-Queue: Khushal <khushalsagar@chromium.org>
Reviewed-by: Khushal <khushalsagar@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#774811}

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

@@ -567,6 +567,8 @@ crbug.com/891456 [ android nvidia ] conformance/textures/image_bitmap_from_video
 crbug.com/891456 [ android nvidia ] conformance/textures/image_bitmap_from_video/tex-2d-rgba-rgba-unsigned_byte.html [ RetryOnFailure ]
 crbug.com/1025790 [ android nvidia ] conformance/textures/misc/tex-image-canvas-corruption.html [ Skip ]
 crbug.com/478572 [ android nvidia ] deqp/data/gles2/shaders/functions.html [ Failure ]
+# Texture tests found to generate intermittent GL errors in the GPU process
+crbug.com/1090407 [ android nvidia ] conformance/textures/* [ RetryOnFailure ]
 
 # Flaky timeout on android_n5x_swarming_rel and
 # android-marshmallow-arm64-rel.