DevTools: revert Persistence2.0 experiment by default.

DevTools: revert Persistence2.0 experiment by default.

It turned out that Persistence2.0 doesn't account for the important
usecase: develoers were using workspace feature to override hosted
stylesheets.

In this case, both Persistence2.0 and "prevalidateBindigns"
experiments stay on their way:
- Persistence2.0 doesn't allow to map files with different filenames
- prevalidateBindings doesn't allow to map network resources to files
  if contents are different.

This patch:
- disables Persistence2.0 experiment by default
- merges prevalidateBindings experiment into Persistence2.0 experiment

The latter is important since binding prevalidation only necessary for
Persistence2.0 to work properly.

BUG=707002
R=dgozman

Review-Url: https://codereview.chromium.org/2818713007
Cr-Commit-Position: refs/heads/master@{#465412}
(cherry picked from commit 87e05d141b5b873725e95585e92f07a6b7ac1fb2)

Review-Url: https://codereview.chromium.org/2834493005 .
Cr-Commit-Position: refs/branch-heads/3071@{#100}
Cr-Branched-From: a106f0abbf69dad349d4aaf4bcc4f5d376dd2377-refs/heads/master@{#464641}
Committed: https://chromium.googlesource.com/chromium/src/+/cc83cecb8fa8b3385610f2dd893166acbedbd8da

[lushnikov, 2017-04-20 21:29:09]

Description was changed from

==========
DevTools: revert Persistence2.0 experiment by default.

It turned out that Persistence2.0 doesn't account for the important
usecase: develoers were using workspace feature to override hosted
stylesheets.

In this case, both Persistence2.0 and "prevalidateBindigns"
experiments stay on their way:
- Persistence2.0 doesn't allow to map files with different filenames
- prevalidateBindings doesn't allow to map network resources to files
  if contents are different.

This patch:
- disables Persistence2.0 experiment by default
- merges prevalidateBindings experiment into Persistence2.0 experiment

The latter is important since binding prevalidation only necessary for
Persistence2.0 to work properly.

BUG=707002
R=dgozman

Review-Url: https://codereview.chromium.org/2818713007
Cr-Commit-Position: refs/heads/master@{#465412}
(cherry picked from commit 87e05d141b5b873725e95585e92f07a6b7ac1fb2)
==========

to

==========
DevTools: revert Persistence2.0 experiment by default.

It turned out that Persistence2.0 doesn't account for the important
usecase: develoers were using workspace feature to override hosted
stylesheets.

In this case, both Persistence2.0 and "prevalidateBindigns"
experiments stay on their way:
- Persistence2.0 doesn't allow to map files with different filenames
- prevalidateBindings doesn't allow to map network resources to files
  if contents are different.

This patch:
- disables Persistence2.0 experiment by default
- merges prevalidateBindings experiment into Persistence2.0 experiment

The latter is important since binding prevalidation only necessary for
Persistence2.0 to work properly.

BUG=707002
R=dgozman

Review-Url: https://codereview.chromium.org/2818713007
Cr-Commit-Position: refs/heads/master@{#465412}
(cherry picked from commit 87e05d141b5b873725e95585e92f07a6b7ac1fb2)

Review-Url: https://codereview.chromium.org/2834493005 .
Cr-Commit-Position: refs/branch-heads/3071@{#100}
Cr-Branched-From:
a106f0abbf69dad349d4aaf4bcc4f5d376dd2377-refs/heads/master@{#464641}
Committed:
https://chromium.googlesource.com/chromium/src/+/cc83cecb8fa8b3385610f2dd8931...
==========

[lushnikov, 2017-04-20 21:29:10]

Committed patchset #1 (id:1) manually as
cc83cecb8fa8b3385610f2dd893166acbedbd8da.