message: Make flat_transforms_to_matrices and matrices_to_flat_transforms public available.
diff: @@ -25,6 +25,8 @@ projective transforms (including rotation) are supported.
  @@angles_to_projective_transforms
  @@compose_transforms
  @@adjust_yiq_hsv
  +@@flat_transforms_to_matrices
  +@@matrices_to_flat_transforms
  @@random_yiq_hsv
  @@rotate
  @@transform
  @@ -58,6 +60,8 @@ from tensorflow.contrib.image.python.ops.distort_image_ops import random_hsv_in_
  from tensorflow.contrib.image.python.ops.image_ops import angles_to_projective_transforms
  from tensorflow.contrib.image.python.ops.image_ops import compose_transforms
  from tensorflow.contrib.image.python.ops.image_ops import connected_components
  +from tensorflow.contrib.image.python.ops.image_ops import flat_transforms_to_matrices
  +from tensorflow.contrib.image.python.ops.image_ops import matrices_to_flat_transforms
  from tensorflow.contrib.image.python.ops.image_ops import rotate
  from tensorflow.contrib.image.python.ops.image_ops import transform
  from tensorflow.contrib.image.python.ops.image_ops import translate
  