commit fe8c4db4003022f5cb12506a15cc78ea6633bbdf
author Stefan Zager <szager@chromium.org> Thu Feb 01 16:33:24 2018
committer Commit Bot <commit-bot@chromium.org> Thu Feb 01 16:33:24 2018
tree 886889374483955b54437f4b3ce2fe1ff8e7f9ea
parent ecc43a2f3233d5c3189f6fc79c13aa5f714c9e4c

[RootLayerScrolls] Flip RuntimeEnabledFeatures flag to experimental

*** PLEASE DO NOT REVERT ***

This CL is the culmination of literally years of work.  If you
believe it is breaking something, please contact szager@chromium.org
or skobes@chromium.org before reverting.

With this change, all blink layout tests will run with root layer
scrolling enabled.  The main components of this patch:

1) Set the runtime_enabled_features.json5 entry for
"RootLayerScrolling" to "experimental".

2) Remove virtual/rootlayerscrolls prefix from entries in
LayoutTests/TestExpectations and FlagExpectations/*, and resolve
redundancies with existing expectations lines.

3) Copy the current contents of LayoutTests/TextExpectations to
LayoutTests/FlagExpectations/no-root-layer-scrolls

4) Append the contents of FlagExpectations/root-layer-scrolls to
TestExpectations

5) Remove the "rootlayerscrolls" entries from VirtualTestSuites, and
remove the "--root-layer-scrolls" flag from all remaining entries in
that file.

6) Delete the directory LayoutTests/virtual/rootlayerscrolls, and all
of its contents.

7) Move/copy test expectations files in
LayoutTests/flag-specific/root-layer-scrolls and in the canonical
(i.e., not flag-specific) LayoutTests/ locations as follows:

  - for each layout test that has at least one expectation file in
    flag-specific/root-layer-scrolls/:
      - if the test has any .png files in
        flag-specific/root-layer-scrolls/:
          - move all .png files in the canonical location to
            flag-specific/no-root-layer-scrolls
          - move all .png files in flag-specific/root-layer-scrolls/
            to the canonical location.
      - if the test has any .txt files in
        flag-specific/root-layer-scrolls/:
          - move all .txt files in the canonical location to
            flag-specific/no-root-layer-scrolls
          - move all .txt files in flag-specific/root-layer-scrolls/
            to the canonical location.

BUG=417782
R=skobes@chromium.org,bokan@chromium.org,chrishtr@chromium.org

Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
Change-Id: I7a13ad251efc573acc5b737bd9ca29adf21a5c87
Reviewed-on: https://chromium-review.googlesource.com/893624
Commit-Queue: Stefan Zager <szager@chromium.org>
Reviewed-by: Steve Kobes <skobes@chromium.org>
Reviewed-by: Chris Harrelson <chrishtr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#533694}