Suppress conformance/textures/misc/texture-video-transparent.html on Nexus5X validating

TBR=kbr@chromium.org

Bug: 1135785
Change-Id: If06cf5b8d4d584acd23c768a645d9a23fc82bed9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2464048Reviewed-by: Shrek Shao <shrekshao@google.com>
Commit-Queue: Shrek Shao <shrekshao@google.com>
Cr-Commit-Position: refs/heads/master@{#815892}

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

@@ -600,6 +600,7 @@ crbug.com/1095679 [ android qualcomm-adreno-(tm)-418 no-passthrough ] conformanc
 crbug.com/1095679 [ android qualcomm-adreno-(tm)-418 no-passthrough ] conformance/textures/canvas/tex-2d-rgba-rgba-unsigned_byte.html [ RetryOnFailure ]
 crbug.com/1095679 [ android qualcomm-adreno-(tm)-418 no-passthrough ] conformance/textures/canvas/tex-2d-rgba-rgba-unsigned_short_4_4_4_4.html [ RetryOnFailure ]
 crbug.com/1095679 [ android qualcomm-adreno-(tm)-418 no-passthrough ] conformance/textures/canvas/tex-2d-rgba-rgba-unsigned_short_5_5_5_1.html [ RetryOnFailure ]
+crbug.com/1135785 [ android qualcomm-adreno-(tm)-418 no-passthrough ] conformance/textures/misc/texture-video-transparent.html [ RetryOnFailure ]
 # Timing out on this device for unknown reasons.
 crbug.com/1099148 [ android qualcomm-adreno-(tm)-418 ] deqp/data/gles2/shaders/swizzles.html [ Skip ]
 crbug.com/1122644 [ android qualcomm-adreno-(tm)-418 ] conformance/textures/misc/texture-upload-size.html [ Skip ]