Keep WKWebView control group users in the control group

Keep WKWebView control group users in the control group

Don't require users who have entered the control group to be eligible
for the trial in subsequent launches in order to stay in the control
group. This makes the control group persistent for users who enter
it (just as the experiment group is persistent for users who are
migrated, although the mechanism there is very different) so there
won't be different biasing around crashing or incognito use.

Also fixes a recent regression that would cause force-enabled or
force-disabled users not to report the group.

TBR=rohitrao

BUG=557115
TEST=For a control group user, either terminate in incognito, or
crash. On the next launch, the user should still be in the control
group.

Committed: https://crrev.com/84a07f872099ccd12eda0b95ab45a0a099c2ffe1
Cr-Commit-Position: refs/heads/master@{#362992}

[stuartmorgan, 2015-12-03 15:49:46]

Description was changed from

==========
Keep WKWebView control group users in the control group

Don't require users who have entered the control group to be eligible
for the trial in subsequent launches in order to stay in the control
group. This makes the control group persistent for users who enter
it (just as the experiment group is persistent for users who are
migrated, although the mechanism there is very different) so there
won't be different biasing around crashing or incognito use.

Also fixes a recent regression that would cause force-enabled or
force-disabled users not to report the group.

BUG=557115
TEST=For a control group user, either terminate in incognito, or
crash. On the next launch, the user should still be in the control
group.
==========

to

==========
Keep WKWebView control group users in the control group

Don't require users who have entered the control group to be eligible
for the trial in subsequent launches in order to stay in the control
group. This makes the control group persistent for users who enter
it (just as the experiment group is persistent for users who are
migrated, although the mechanism there is very different) so there
won't be different biasing around crashing or incognito use.

Also fixes a recent regression that would cause force-enabled or
force-disabled users not to report the group.

TBR=rohitrao

BUG=557115
TEST=For a control group user, either terminate in incognito, or
crash. On the next launch, the user should still be in the control
group.
==========

[stuartmorgan, 2015-12-03 15:50:00]

stuartmorgan@chromium.org changed reviewers:
+ rohitrao@chromium.org

[stuartmorgan, 2015-12-03 15:50:01]

TBRing since it's a direct upstreaming.

[stuartmorgan, 2015-12-03 15:50:04]

The CQ bit was checked by stuartmorgan@chromium.org

[commit-bot: I haz the power, 2015-12-03 15:50:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1495443006/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1495443006/1

[commit-bot: I haz the power, 2015-12-03 16:23:13]

Description was changed from

==========
Keep WKWebView control group users in the control group

Don't require users who have entered the control group to be eligible
for the trial in subsequent launches in order to stay in the control
group. This makes the control group persistent for users who enter
it (just as the experiment group is persistent for users who are
migrated, although the mechanism there is very different) so there
won't be different biasing around crashing or incognito use.

Also fixes a recent regression that would cause force-enabled or
force-disabled users not to report the group.

TBR=rohitrao

BUG=557115
TEST=For a control group user, either terminate in incognito, or
crash. On the next launch, the user should still be in the control
group.
==========

to

==========
Keep WKWebView control group users in the control group

Don't require users who have entered the control group to be eligible
for the trial in subsequent launches in order to stay in the control
group. This makes the control group persistent for users who enter
it (just as the experiment group is persistent for users who are
migrated, although the mechanism there is very different) so there
won't be different biasing around crashing or incognito use.

Also fixes a recent regression that would cause force-enabled or
force-disabled users not to report the group.

TBR=rohitrao

BUG=557115
TEST=For a control group user, either terminate in incognito, or
crash. On the next launch, the user should still be in the control
group.
==========

[commit-bot: I haz the power, 2015-12-03 16:23:13]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-12-03 16:24:09]

Description was changed from

==========
Keep WKWebView control group users in the control group

Don't require users who have entered the control group to be eligible
for the trial in subsequent launches in order to stay in the control
group. This makes the control group persistent for users who enter
it (just as the experiment group is persistent for users who are
migrated, although the mechanism there is very different) so there
won't be different biasing around crashing or incognito use.

Also fixes a recent regression that would cause force-enabled or
force-disabled users not to report the group.

TBR=rohitrao

BUG=557115
TEST=For a control group user, either terminate in incognito, or
crash. On the next launch, the user should still be in the control
group.
==========

to

==========
Keep WKWebView control group users in the control group

Don't require users who have entered the control group to be eligible
for the trial in subsequent launches in order to stay in the control
group. This makes the control group persistent for users who enter
it (just as the experiment group is persistent for users who are
migrated, although the mechanism there is very different) so there
won't be different biasing around crashing or incognito use.

Also fixes a recent regression that would cause force-enabled or
force-disabled users not to report the group.

TBR=rohitrao

BUG=557115
TEST=For a control group user, either terminate in incognito, or
crash. On the next launch, the user should still be in the control
group.

Committed: https://crrev.com/84a07f872099ccd12eda0b95ab45a0a099c2ffe1
Cr-Commit-Position: refs/heads/master@{#362992}
==========

[commit-bot: I haz the power, 2015-12-03 16:24:10]

Patchset 1 (id:??) landed as
https://crrev.com/84a07f872099ccd12eda0b95ab45a0a099c2ffe1
Cr-Commit-Position: refs/heads/master@{#362992}