Remove ContextClient from NavigatorPlugins

Remove ContextClient from NavigatorPlugins

It's unused.

BUG=610176
Review-Url: https://codereview.chromium.org/2618573003
Cr-Commit-Position: refs/heads/master@{#441662}
Committed: https://chromium.googlesource.com/chromium/src/+/54b068fa0ee84f3bdfcdf41b9f36cb47e5001104

[haraken, 2017-01-05 12:02:03]

haraken@chromium.org changed reviewers:
+ sigbjornf@opera.com

[haraken, 2017-01-05 12:02:04]

PTAL

[sof, 2017-01-05 12:26:40]

lgtm

[haraken, 2017-01-05 12:30:22]

The CQ bit was checked by haraken@chromium.org

[commit-bot: I haz the power, 2017-01-05 12:30:39]

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, 2017-01-05 15:57:41]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1483619422060820,
"parent_rev": "1cc893851ef9ad007f4fb1eaabf58870fc634e81", "commit_rev":
"54b068fa0ee84f3bdfcdf41b9f36cb47e5001104"}

[commit-bot: I haz the power, 2017-01-05 15:58:23]

Description was changed from

==========
Remove ContextClient from NavigatorPlugins

It's unused.

BUG=610176
==========

to

==========
Remove ContextClient from NavigatorPlugins

It's unused.

BUG=610176

Review-Url: https://codereview.chromium.org/2618573003
Cr-Commit-Position: refs/heads/master@{#441662}
Committed:
https://chromium.googlesource.com/chromium/src/+/54b068fa0ee84f3bdfcdf41b9f36...
==========

[commit-bot: I haz the power, 2017-01-05 15:58:24]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/chromium/src/+/54b068fa0ee84f3bdfcdf41b9f36...