message: Fix incorrect 'hdrs' for //tensorflow/lite/core/shims:builtin_ops.
  Also, restrict visibility for the targets in this package.
diff: @@ -48,7 +48,10 @@ cc_library(
  hdrs = FRAMEWORK_LIB_HDRS + CC_API_HDRS,
  compatible_with = get_compatible_with_portable(),
  copts = tflite_copts() + TFLITE_DEFAULT_COPTS,
  - visibility = ["//visibility:public"],
  + visibility = [
  + "//tensorflow/lite:__subpackages__",
  + "//tensorflow_lite_support:__subpackages__",
  + ],
  deps = [
  "//tensorflow/lite:allocation",
  "//tensorflow/lite:arena_planner",
  @@ -104,9 +107,9 @@ cc_library(
  cc_library(
  name = "builtin_ops",
  hdrs = [
  - "builtin_op_kernels.h",
  - "fully_connected.h",
  - "register.h",
  + "cc/kernels/register.h",
  + "//tensorflow/lite/kernels:builtin_op_kernels.h",
  + "//tensorflow/lite/kernels:fully_connected.h",
  ],
  compatible_with = get_compatible_with_portable(),
  deps = [
  @@ -133,7 +136,10 @@ cc_library(
  hdrs = ["c/c_api.h"],
  compatible_with = get_compatible_with_portable(),
  copts = TFLITE_DEFAULT_COPTS,
  - visibility = ["//visibility:public"],
  + visibility = [
  + "//tensorflow/lite:__subpackages__",
  + "//tensorflow_lite_support:__subpackages__",
  + ],
  deps = ["//tensorflow/lite/c:c_api"],
  )
  @@ -142,7 +148,10 @@ cc_library(
  hdrs = ["c/c_api_experimental.h"],
  compatible_with = get_compatible_with_portable(),
  copts = TFLITE_DEFAULT_COPTS,
  - visibility = ["//visibility:public"],
  + visibility = [
  + "//tensorflow/lite:__subpackages__",
  + "//tensorflow_lite_support:__subpackages__",
  + ],
  deps = ["//tensorflow/lite/c:c_api_experimental"],
  )
  @@ -151,7 +160,10 @@ cc_library(
  hdrs = ["c/common.h"],
  compatible_with = get_compatible_with_portable(),
  copts = TFLITE_DEFAULT_COPTS,
  - visibility = ["//visibility:public"],
  + visibility = [
  + "//tensorflow/lite:__subpackages__",
  + "//tensorflow_lite_support:__subpackages__",
  + ],
  deps = ["//tensorflow/lite/c:common"],
  )
  @@ -160,7 +172,10 @@ cc_library(
  hdrs = ["c/builtin_op_data.h"],
  compatible_with = get_compatible_with_portable(),
  copts = TFLITE_DEFAULT_COPTS,
  - visibility = ["//visibility:public"],
  + visibility = [
  + "//tensorflow/lite:__subpackages__",
  + "//tensorflow_lite_support:__subpackages__",
  + ],
  deps = ["//tensorflow/lite/c:common"],
  )
  