I just rebaselined a test using webkit-patch rebaseline-cl, and the result was missing on win10_blink_rel and android_blink_rel. I think the result was incorrect.

The whole console output was as below:

2017-09-27 08:52:11,596 - Finished try jobs found for all try bots.
2017-09-27 08:52:11,756 - Failed to fetch results for "win10_blink_rel".
2017-09-27 08:52:11,757 - Results URL: https://storage.googleapis.com/chromium-layout-test-archives/win10_blink_rel/4314/layout-test-results/results.html
2017-09-27 08:52:13,840 - Failed to fetch results for "android_blink_rel".
2017-09-27 08:52:13,841 - Results URL: https://storage.googleapis.com/chromium-layout-test-archives/android_blink_rel/3909/layout-test-results/results.html
2017-09-27 08:52:15,183 - There are some builders with no results:
2017-09-27 08:52:15,183 -   android_blink_rel
2017-09-27 08:52:15,183 -   win10_blink_rel
Would you like to continue? [y/N]: y
Would you like to try to fill in missing results with
available results?
Note: This will generally yield correct results
as long as the results are not platform-specific. [y/N]: y
2017-09-27 08:52:31,763 - No retry summary available for "mac10.11_retina_blink_rel".
2017-09-27 08:52:31,924 - No retry summary available for "mac10.10_blink_rel".
2017-09-27 08:52:32,093 - No retry summary available for "mac10.11_blink_rel".
2017-09-27 08:52:32,575 - No retry summary available for "mac10.12_blink_rel".
2017-09-27 08:52:32,583 - For paint/invalidation/outline-change-in-scrollers.html:
2017-09-27 08:52:32,584 - Using "mac10.10_blink_rel" build 4067 for linux-trusty.
2017-09-27 08:52:32,584 - Using "mac10.10_blink_rel" build 4067 for win-win7.
2017-09-27 08:52:32,584 - Using "mac10.10_blink_rel" build 4067 for android-kitkat.
2017-09-27 08:52:32,584 - Using "mac10.10_blink_rel" build 4067 for win-win10.
2017-09-27 08:52:33,094 - Rebaselining paint/invalidation/outline-change-in-scrollers.html

I think it's incorrect that the result on mac10.10_blink_rel is used for linux-trusty, win-win7, android-kitkat and win-win10:
1. linux-trusty and win-win7 have results, so we should use their results instead of using mac10.10_blink_rel.
2. android-kitkat and win-win10 should use the results on their fallback chains instead of mac10.10_blink_rel.

Actual result:
The common baseline was overwritten by the mac result which is different from the common baseline.

Expected result:
The common baseline should be kept as-is. New baseline should be created for mac.