Tree webkit builders look like a christmas tree. I am going to revert...

Can someone from Blink infra explain why Rebaseline bot didn't change tests and only updated TestExpectations for this case?

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e283632b2a3913e5159452442432053d5e72c6c0

commit e283632b2a3913e5159452442432053d5e72c6c0
Author: glebl <glebl@chromium.org>
Date: Wed Aug 31 14:46:25 2016

Mark all affected tests for r409303 as NeedsManualRebaseline

The rebaseline bot failed to rebase tests for https://crrev.com/409303
and only updated TestExpectations. This patch marks all those tests as NeedsManualRebaseline.

BUG= 642668 
NOTRY=true

Review-Url: https://codereview.chromium.org/2294293002
Cr-Commit-Position: refs/heads/master@{#415628}

[modify] https://crrev.com/e283632b2a3913e5159452442432053d5e72c6c0/third_party/WebKit/LayoutTests/TestExpectations

#2: Good question. One way to try to see why this happened may be to locally change expectations of those tests to NeedsRebaseline and run `webkit-patch auto-rebaseline` to reproduce.

webkit-patch auto-rebaseline is supposed to download new baselines from:

https://storage.googleapis.com/chromium-layout-test-archives/<builder>/results/layout-test-results/<baseline-path>

For example for fast/borders/fieldsetBorderRadius.html on Mac 10.11 it should have downloaded:

https://storage.googleapis.com/chromium-layout-test-archives/WebKit_Mac10_11/results/layout-test-results/fast/borders/fieldsetBorderRadius-actual.txt

(After downloading from all platforms, it should have consolidated the baselines and put it in https://chromium.googlesource.com/chromium/src/+/master/third_party/WebKit/LayoutTests/fast/borders/fieldsetBorderRadius-expected.txt).

I didn't end up reproducing this, and this bug was originally filed for some failures which were fixed a while ago; looking at the flakiness dashboard, these tests appear to generally be passing recently (with the exception of svg/custom/inline-svg-in-xhtml.xml needing to be rebaselined on Mac10.12, but that's a separate issue).

https://test-results.appspot.com/dashboards/flakiness_dashboard.html#testType=webkit_tests&tests=fast%2Fblock%2Fbasic%2Ffieldset-stretch-to-legend.html%2Cfast%2Fborders%2FfieldsetBorderRadius.html%2Cfast%2Fcss%2Ffieldset-display-row.html%2Cfast%2Fcss%2Finvalidation%2Ffieldset-disabled.html%2Cfast%2Fforms%2F006.html%2Cfast%2Fforms%2F007.html%2Cfast%2Fforms%2Ffocus-selection-input.html%2Cfast%2Fforms%2Ffocus-selection-textarea.html%2Cfast%2Fforms%2Fvalidity-property.html%2Cfast%2Fforms%2Ffieldset%2Ffieldset-align.html%2Cfast%2Fforms%2Ffieldset%2Ffieldset-legend-padding-unclipped-fieldset-border.html%2Cfast%2Fforms%2Ffieldset%2Ffieldset-with-float.html%2Cfast%2Fforms%2Ffieldset%2Ffloat-before-fieldset.html%2Cfast%2Fforms%2Ffieldset%2Fvalidation-in-fieldset.html%2Cfast%2Fruby%2FrubyDOM-remove-text2.html%2Cfast%2Ftext%2Fwhitespace%2Fnormal-after-nowrap-breaking.html%2Cfast%2Fwriting-mode%2Ffieldsets.html%2Cpaint%2Fmasks%2Ffieldset-mask.html%2Csvg%2Fcustom%2Finline-svg-in-xhtml.xml