Revert of Removes Native App Launcher functionality.

Revert of Removes Native App Launcher functionality. (patchset #4 id:60001 of https://codereview.chromium.org/2821453003/ )

Reason for revert:
Nothing's broken, but will reland with an
experimental flag.

Original issue's description:
> Removes Native App Launcher functionality.
> 
> This is the first step of deprecating Native App Launcher. This step
> removes the functionality from Chrome so testing can start.
> 
> There will be lots of dead code and unused classes/methods left after
> this step and they will be pruned in subsequent CLs.
> 
> BUG=711511
> TEST=Tools > Settings > Google Apps should not be there. Visits to Maps or YouTube sites will not show infobar. Tapping on Maps or YouTube links may still launch Maps and YouTube app because of Universal Links.
> 
> Review-Url: https://codereview.chromium.org/2821453003
> Cr-Commit-Position: refs/heads/master@{#468374}
> Committed: https://chromium.googlesource.com/chromium/src/+/b9c3c20ba9a2a3c05b6d0f976e4a2d71c8a74fa6

TBR=rohitrao@chromium.org,eugenebut@chromium.org,marq@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=711511
Review-Url: https://codereview.chromium.org/2854883003
Cr-Commit-Position: refs/heads/master@{#468805}
Committed: https://chromium.googlesource.com/chromium/src/+/333f8780006c4409f44664bdc7d4637bfe636c35

[pkl (ping after 24h if needed), 2017-05-02 22:39:39]

Created Revert of Removes Native App Launcher functionality.

[rohitrao (ping after 24h), 2017-05-02 22:41:19]

LGTM

Looks like it's chosen to run itself through the CQ again, which is good.

[pkl (ping after 24h if needed), 2017-05-02 22:41:36]

The CQ bit was checked by pkl@chromium.org

[commit-bot: I haz the power, 2017-05-02 22:42:01]

CQ is trying da patch.

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

[commit-bot: I haz the power, 2017-05-02 22:53:27]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1493764896077980, "parent_rev":
"f1f9ae6b2ae16edeebaee1430494f3ba39384756", "commit_rev":
"333f8780006c4409f44664bdc7d4637bfe636c35"}

[commit-bot: I haz the power, 2017-05-02 22:53:35]

Description was changed from

==========
Revert of Removes Native App Launcher functionality. (patchset #4 id:60001 of
https://codereview.chromium.org/2821453003/ )

Reason for revert:
Nothing's broken, but will reland with an
experimental flag.

Original issue's description:
> Removes Native App Launcher functionality.
> 
> This is the first step of deprecating Native App Launcher. This step
> removes the functionality from Chrome so testing can start.
> 
> There will be lots of dead code and unused classes/methods left after
> this step and they will be pruned in subsequent CLs.
> 
> BUG=711511
> TEST=Tools > Settings > Google Apps should not be there. Visits to Maps or
YouTube sites will not show infobar. Tapping on Maps or YouTube links may still
launch Maps and YouTube app because of Universal Links.
> 
> Review-Url: https://codereview.chromium.org/2821453003
> Cr-Commit-Position: refs/heads/master@{#468374}
> Committed:
https://chromium.googlesource.com/chromium/src/+/b9c3c20ba9a2a3c05b6d0f976e4a...

TBR=rohitrao@chromium.org,eugenebut@chromium.org,marq@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=711511
==========

to

==========
Revert of Removes Native App Launcher functionality. (patchset #4 id:60001 of
https://codereview.chromium.org/2821453003/ )

Reason for revert:
Nothing's broken, but will reland with an
experimental flag.

Original issue's description:
> Removes Native App Launcher functionality.
> 
> This is the first step of deprecating Native App Launcher. This step
> removes the functionality from Chrome so testing can start.
> 
> There will be lots of dead code and unused classes/methods left after
> this step and they will be pruned in subsequent CLs.
> 
> BUG=711511
> TEST=Tools > Settings > Google Apps should not be there. Visits to Maps or
YouTube sites will not show infobar. Tapping on Maps or YouTube links may still
launch Maps and YouTube app because of Universal Links.
> 
> Review-Url: https://codereview.chromium.org/2821453003
> Cr-Commit-Position: refs/heads/master@{#468374}
> Committed:
https://chromium.googlesource.com/chromium/src/+/b9c3c20ba9a2a3c05b6d0f976e4a...

TBR=rohitrao@chromium.org,eugenebut@chromium.org,marq@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=711511

Review-Url: https://codereview.chromium.org/2854883003
Cr-Commit-Position: refs/heads/master@{#468805}
Committed:
https://chromium.googlesource.com/chromium/src/+/333f8780006c4409f44664bdc7d4...
==========

[commit-bot: I haz the power, 2017-05-02 22:53:36]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/333f8780006c4409f44664bdc7d4...