| Index: third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/run_webkit_tests.py
 | 
| diff --git a/third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/run_webkit_tests.py b/third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/run_webkit_tests.py
 | 
| index d4f23c97edff3740910097040dc7ee8b82df47fb..f999f5c9c19125cc61b0e1f10492326fa28b2d1f 100644
 | 
| --- a/third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/run_webkit_tests.py
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| +++ b/third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/run_webkit_tests.py
 | 
| @@ -235,6 +235,15 @@ def parse_args(args):
 | 
|                  dest='smoke',
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|                  action='store_false',
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|                  help='Do not run just the SmokeTests'),
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| +            optparse.make_option(
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| +                '--image-first-tests',
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| +                action='append',
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| +                default=[],
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| +                dest='image_first_tests',
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| +                help=('A directory (or test) where the test result will only be compared with the '
 | 
| +                      'image baseline if an image baseline is available, and fall back to comparison '
 | 
| +                      'with the text baseline when image baselines are missing. Specify multiple times '
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| +                      'to add multiple directories/tests.')),
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|          ]))
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|  
 | 
|      option_group_definitions.append(
 | 
| 
 |