message: Fully qualify tstring in TF_CALL_tstring macros.
diff: @@ -67,8 +67,8 @@ limitations under the License.
  #define TF_CALL_int16(m) m(::tensorflow::int16)
  #define TF_CALL_int8(m) m(::tensorflow::int8)
  -#define TF_CALL_string(m) m(tstring)
  -#define TF_CALL_tstring(m) m(tstring)
  +#define TF_CALL_string(m) m(::tensorflow::tstring)
  +#define TF_CALL_tstring(m) m(::tensorflow::tstring)
  #define TF_CALL_resource(m) m(::tensorflow::ResourceHandle)
  #define TF_CALL_variant(m) m(::tensorflow::Variant)
  #define TF_CALL_complex64(m) m(::tensorflow::complex64)
  @@ -99,8 +99,8 @@ limitations under the License.
  #define TF_CALL_int16(m)
  #define TF_CALL_int8(m)
  -#define TF_CALL_string(m) m(tstring)
  -#define TF_CALL_tstring(m) m(tstring)
  +#define TF_CALL_string(m) m(::tensorflow::tstring)
  +#define TF_CALL_tstring(m) m(::tensorflow::tstring)
  #define TF_CALL_resource(m)
  #define TF_CALL_variant(m)
  #define TF_CALL_complex64(m)
  