message: Post merge fix to match new skylark rule
diff: @@ -28,7 +28,7 @@ tf_proto_library(
  "driver/trace.proto",
  ],
  cc_api_version = 2,
  - default_header = True,
  + make_default_target_header_only = True,
  j2objc_api_version = 1,
  )
  @@ -48,7 +48,7 @@ tf_proto_library(
  name = "poplibs_ops",
  srcs = ["kernels/poplibs_ops.proto"],
  cc_api_version = 2,
  - default_header = True,
  + make_default_target_header_only = True,
  j2objc_api_version = 1,
  )
  