message: Increase shard_count for extract_image_patches_grad_test.
  The test was previously timing out.
diff: @@ -3244,6 +3244,7 @@ cuda_py_test(
  "//tensorflow/python:framework",
  "//tensorflow/python:framework_for_generated_wrappers",
  ],
  + shard_count = 3,
  tags = ["notap"], # http://b/31080670
  xla_enable_strict_auto_jit = True,
  )
  