Re-enable AImageReader on ARM GPUs.

Re-enable AImageReader on ARM GPUs since few bug fixes related to
memory regressions have been landed and we expect those fixes
might have also fixed the crashes we were seeing with ARM GPUs.

Will need to revert this CL if it causes crashes. Since the crashes are
not reproducible locally, there is no other way to test this expect
removing the GPU family from the blacklist and hence enabling it on
ToT.

Bug: 1013797
Change-Id: I3402d049e06824284c3b9836fd05ebe03754b43a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1873393Reviewed-by: Frank Liberato <liberato@chromium.org>
Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Commit-Queue: vikas soni <vikassoni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#708306}

gpu/config/gpu_driver_bug_list.json

@@ -2903,18 +2903,6 @@
         "reset_base_mipmap_level_before_texstorage"
       ]
     },
-    {
-      "id":275,
-      "cr_bugs": [838725],
-      "description": "Disable AImageReader on ARM GPUs as its buggy.",
-      "os": {
-        "type": "android"
-      },
-      "gl_vendor": "ARM.*",
-      "features": [
-        "disable_aimagereader"
-      ]
-    },
     {
       "id": 277,
       "description": "Direct composition path is buggy on certain AMD devices/drivers",