message: Fix backwards_compatibility_test broken by rollback of changes to Where op.
diff: @@ -32693,43 +32693,6 @@ op {
  type: DT_INT64
  }
  }
  -op {
  - name: "Where"
  - input_arg {
  - name: "input"
  - type_attr: "T"
  - }
  - output_arg {
  - name: "index"
  - type: DT_INT64
  - }
  - attr {
  - name: "T"
  - type: "type"
  - default_value {
  - type: DT_BOOL
  - }
  - allowed_values {
  - list {
  - type: DT_FLOAT
  - type: DT_DOUBLE
  - type: DT_INT64
  - type: DT_INT32
  - type: DT_UINT8
  - type: DT_UINT16
  - type: DT_INT16
  - type: DT_INT8
  - type: DT_COMPLEX64
  - type: DT_COMPLEX128
  - type: DT_QINT8
  - type: DT_QUINT8
  - type: DT_QINT32
  - type: DT_HALF
  - type: DT_BOOL
  - }
  - }
  - }
  -}
  op {
  name: "WholeFileReader"
  output_arg {
  