Remove DownloadController java weak reference

Remove DownloadController java weak reference

All DownloadController java method can be static.
So there is no point to hold a java reference.

Review-Url: https://codereview.chromium.org/2902453003
Cr-Commit-Position: refs/heads/master@{#473722}
Committed: https://chromium.googlesource.com/chromium/src/+/e009d5fc3e329c2822ab06f415edbd35d2779ad1

[qinmin, 2017-05-22 20:12:01]

qinmin@chromium.org changed reviewers:
+ dtrainor@chromium.org

[qinmin, 2017-05-22 20:12:01]

PTAL

[David Trainor- moved to gerrit, 2017-05-22 21:20:00]

lgtm

[qinmin, 2017-05-22 21:21:09]

The CQ bit was checked by qinmin@chromium.org

[commit-bot: I haz the power, 2017-05-22 21:21:40]

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, 2017-05-22 22:13:17]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1495488069277590, "parent_rev":
"ab5c383a79f5d3ca96239215dd56d81f033f2f8c", "commit_rev":
"e009d5fc3e329c2822ab06f415edbd35d2779ad1"}

[commit-bot: I haz the power, 2017-05-22 22:13:27]

Description was changed from

==========
Remove DownloadController java weak reference

All DownloadController java method can be static.
So there is no point to hold a java reference.
==========

to

==========
Remove DownloadController java weak reference

All DownloadController java method can be static.
So there is no point to hold a java reference.

Review-Url: https://codereview.chromium.org/2902453003
Cr-Commit-Position: refs/heads/master@{#473722}
Committed:
https://chromium.googlesource.com/chromium/src/+/e009d5fc3e329c2822ab06f415ed...
==========

[commit-bot: I haz the power, 2017-05-22 22:13:28]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/e009d5fc3e329c2822ab06f415ed...