Addressing review comment (commit to be squashed).

Author: dhermes

gcloud/bigtable/test_row_data.py

@@ -170,12 +170,9 @@ def test_to_dict(self):
  }
 
  result = partial_row_data.to_dict()
- col1 = family_name1.encode('ascii') + b':' + qual1
- col2 = family_name1.encode('ascii') + b':' + qual2
- col3 = family_name2.encode('ascii') + b':' + qual3
  expected_result = {
- col1: cell1,
- col2: cell2,
- col3: cell3,
+ b'name1:col1': cell1,
+ b'name1:col2': cell2,
+ b'name2:col3': cell3,
  }
  self.assertEqual(result, expected_result)