message: boosted_trees: to name variables so that they can be distinguished in the graph.
diff: @@ -322,9 +322,11 @@ class GradientBoostedDecisionTreeModel(object):
  self._feature_columns = feature_columns
  self._learner_config_serialized = learner_config.SerializeToString()
  self._attempted_trees = variables.Variable(
  - initial_value=array_ops.zeros([], dtypes.int64), trainable=False)
  + initial_value=array_ops.zeros([], dtypes.int64), trainable=False,
  + name="attempted_trees")
  self._finalized_trees = variables.Variable(
  - initial_value=array_ops.zeros([], dtypes.int64), trainable=False)
  + initial_value=array_ops.zeros([], dtypes.int64), trainable=False,
  + name="finalized_trees")
  if not features:
  raise ValueError("Features dictionary must be specified.")
  (fc_names, dense_floats, sparse_float_indices, sparse_float_values,
  