Add prefs for ContentSuggestions on iOS

Add prefs for ContentSuggestions on iOS

This CL registers the prefs needed to use ContentSuggestionsService on iOS.

BUG=679369
Review-Url: https://codereview.chromium.org/2650153002
Cr-Commit-Position: refs/heads/master@{#446002}
Committed: https://chromium.googlesource.com/chromium/src/+/8f9928016a709f3de591e1045fcbbc89ae83d8ce

[gambard, 2017-01-24 09:11:50]

gambard@chromium.org changed reviewers:
+ noyau@chromium.org

[gambard, 2017-01-24 09:11:50]

PTAL.

[noyau (Ping after 24h), 2017-01-25 12:03:02]

The CQ bit was checked by noyau@chromium.org

[noyau (Ping after 24h), 2017-01-25 12:03:03]

lgtm

[commit-bot: I haz the power, 2017-01-25 12:03:20]

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, 2017-01-25 12:12:24]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1485345782964560, "parent_rev":
"8c0bd26598ee23f3f5d85d095fa9eb33ba04108b", "commit_rev":
"8f9928016a709f3de591e1045fcbbc89ae83d8ce"}

[commit-bot: I haz the power, 2017-01-25 12:12:57]

Description was changed from

==========
Add prefs for ContentSuggestions on iOS

This CL registers the prefs needed to use ContentSuggestionsService on iOS.

BUG=679369
==========

to

==========
Add prefs for ContentSuggestions on iOS

This CL registers the prefs needed to use ContentSuggestionsService on iOS.

BUG=679369

Review-Url: https://codereview.chromium.org/2650153002
Cr-Commit-Position: refs/heads/master@{#446002}
Committed:
https://chromium.googlesource.com/chromium/src/+/8f9928016a709f3de591e1045fcb...
==========

[commit-bot: I haz the power, 2017-01-25 12:12:58]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/8f9928016a709f3de591e1045fcb...