Revert "Suppress Pixel_PrecisionRoundedCorner on Nexus 5/6/6P"

This reverts commit fa202801.

Reason for revert: Failing test has been triaged on skia gold.

Original change's description:
> Suppress Pixel_PrecisionRoundedCorner on Nexus 5/6/6P
> 
> The test has been failing since it was introduced.
> 
> TBR=ynovikov@chromium.org
> BUG=chromium:1029329
> 
> Change-Id: Ifa053cbee22dee75700cbde0895659fe41e65f1c
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1942432
> Reviewed-by: Corentin Wallez <cwallez@chromium.org>
> Commit-Queue: Corentin Wallez <cwallez@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#720000}

TBR=cwallez@chromium.org

Change-Id: I25e89f393485df314bd3925c9ef908b40e9c57b2
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:1029329
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1942491Reviewed-by: Malay Keshav <malaykeshav@chromium.org>
Commit-Queue: Malay Keshav <malaykeshav@chromium.org>
Cr-Commit-Position: refs/heads/master@{#720033}

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

@@ -135,9 +135,6 @@ crbug.com/948141 Pixel_CanvasDisplaySRGBAccelerated2D [ Skip ]
 crbug.com/883500 [ android no-skia-renderer qualcomm-adreno-(tm)-330 ] Pixel_BackgroundImage [ Skip ]
 crbug.com/883500 [ android no-use-gl no-use-vulkan qualcomm-adreno-(tm)-420 ] Pixel_BackgroundImage [ Skip ]
 crbug.com/883500 [ android no-use-gl no-use-vulkan qualcomm-adreno-(tm)-430 ] Pixel_BackgroundImage [ Skip ]
-crbug.com/1029329 [ android qualcomm-adreno-(tm)-330 ] Pixel_PrecisionRoundedCorner [ Failure ]
-crbug.com/1029329 [ android qualcomm-adreno-(tm)-420 ] Pixel_PrecisionRoundedCorner [ Failure ]
-crbug.com/1029329 [ android qualcomm-adreno-(tm)-430 ] Pixel_PrecisionRoundedCorner [ Failure ]
 
 # Flakes on Nexus 5X.
 crbug.com/883500 [ android-chromium no-use-gl no-use-vulkan qualcomm-adreno-(tm)-418 ] Pixel_BackgroundImage [ RetryOnFailure ]
@@ -243,4 +240,4 @@ crbug.com/1019462 [ android nvidia no-skia-renderer ] Pixel_WebGL2_BlitFramebuff
 crbug.com/681341 [ mac ] Pixel_WebGLLowToHighPower [ Skip ]
 
 # Flakes on Mac Retine NVIDIA producing a blank image.
-crbug.com/1027518 [ mac nvidia ] Pixel_Video_Context_Loss_VP9 [ Skip ]
+crbug.com/1027518 [ mac nvidia ] Pixel_Video_Context_Loss_VP9 [ Skip ]
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