message: Add user friendly debugging message to TOCO.
diff: @@ -802,8 +802,10 @@ void ConvertTensorFlowReshapeOperator(const Model& model,
  *reshape_op->add_input() = src_op.inputs[1];
  (*reshape_op->mutable_attr())["T"].set_type(DT_FLOAT);
  const auto& shape_array = model.GetArray(src_op.inputs[1]);
  - CHECK(shape_array.data_type == ArrayDataType::kInt32);
  - CHECK(shape_array.buffer != nullptr);
  + QCHECK(shape_array.data_type == ArrayDataType::kInt32)
  + << "Only int32 shape is supported.";
  + QCHECK(shape_array.buffer != nullptr)
  + << "Shape inferred at runtime is not supported.";
  const auto& shape_data = shape_array.GetBuffer<ArrayDataType::kInt32>().data;
  CreateReshapeShapeTensorConst(src_op.inputs[1], shape_data, tensorflow_graph);
  }
  