Revert of Disable SPInvalidation by default

Revert of Disable SPInvalidation by default (patchset #2 id:20001 of https://codereview.chromium.org/2772833003/ )

Reason for revert:
Enable SPInvalidation on M59.

Original issue's description:
> Disable SPInvalidation by default
> 
> We decided to delay launch until M59.
> 
> CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
> 
> Review-Url: https://codereview.chromium.org/2752673002
> Cr-Commit-Position: refs/heads/master@{#456857}
> TBR=nasko@chromium.org (content_features.cc changes SlimmingPaintInvalidation disabled by default)
> 
> Review-Url: https://codereview.chromium.org/2772833003
> Cr-Commit-Position: refs/heads/master@{#459201}
> Committed: https://chromium.googlesource.com/chromium/src/+/a038d334a0e1baae632e583dbc023f3383e8bf6f

TBR=chrishtr@chromium.org,pdr@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.

Review-Url: https://codereview.chromium.org/2782943003
Cr-Commit-Position: refs/heads/master@{#460521}
Committed: https://chromium.googlesource.com/chromium/src/+/eded34c4a1df9950ea622424f2ee9f76ce852213

[Xianzhu, 2017-03-29 18:29:40]

The CQ bit was checked by wangxianzhu@chromium.org

[Xianzhu, 2017-03-29 18:29:40]

Created Revert of Disable SPInvalidation by default

[commit-bot: I haz the power, 2017-03-29 18:30:33]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[chrishtr, 2017-03-29 18:31:22]

lgtm

[pdr., 2017-03-29 18:32:03]

LGTM!

[commit-bot: I haz the power, 2017-03-29 20:29:01]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1490812180527560, "parent_rev":
"d64d9854a1d22208db2d97b7f441696ed0ca8fa0", "commit_rev":
"eded34c4a1df9950ea622424f2ee9f76ce852213"}

[commit-bot: I haz the power, 2017-03-29 20:29:45]

Description was changed from

==========
Revert of Disable SPInvalidation by default (patchset #2 id:20001 of
https://codereview.chromium.org/2772833003/ )

Reason for revert:
Enable SPInvalidation on M59.

Original issue's description:
> Disable SPInvalidation by default
> 
> We decided to delay launch until M59.
> 
>
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
> 
> Review-Url: https://codereview.chromium.org/2752673002
> Cr-Commit-Position: refs/heads/master@{#456857}
> TBR=nasko@chromium.org (content_features.cc changes SlimmingPaintInvalidation
disabled by default)
> 
> Review-Url: https://codereview.chromium.org/2772833003
> Cr-Commit-Position: refs/heads/master@{#459201}
> Committed:
https://chromium.googlesource.com/chromium/src/+/a038d334a0e1baae632e583dbc02...

TBR=chrishtr@chromium.org,pdr@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
==========

to

==========
Revert of Disable SPInvalidation by default (patchset #2 id:20001 of
https://codereview.chromium.org/2772833003/ )

Reason for revert:
Enable SPInvalidation on M59.

Original issue's description:
> Disable SPInvalidation by default
> 
> We decided to delay launch until M59.
> 
>
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
> 
> Review-Url: https://codereview.chromium.org/2752673002
> Cr-Commit-Position: refs/heads/master@{#456857}
> TBR=nasko@chromium.org (content_features.cc changes SlimmingPaintInvalidation
disabled by default)
> 
> Review-Url: https://codereview.chromium.org/2772833003
> Cr-Commit-Position: refs/heads/master@{#459201}
> Committed:
https://chromium.googlesource.com/chromium/src/+/a038d334a0e1baae632e583dbc02...

TBR=chrishtr@chromium.org,pdr@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.

Review-Url: https://codereview.chromium.org/2782943003
Cr-Commit-Position: refs/heads/master@{#460521}
Committed:
https://chromium.googlesource.com/chromium/src/+/eded34c4a1df9950ea622424f2ee...
==========

[commit-bot: I haz the power, 2017-03-29 20:29:46]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/eded34c4a1df9950ea622424f2ee...