Bookmark context menu should appear over the bookmark folder menu.

Bookmark context menu should appear over the bookmark folder menu.

If user right clicks immediately on entering a bookmark button, then open the
folder without delay so that context menu appears over the folder menu.

BUG=168758
R=asvitkine@chromium.org

TEST=
1. Add a bookmark folder to Bookmarks Bar (folder1).
2. Add a subfolder (folder2) inside folder1.
3. Add few bookmarks to folder2.
4. Click on folder1 and immediately right click on folder2 and observe.
5. Context Menu should appear over the folder menu (folder contents window).

Committed: https://crrev.com/33900453c57e5f669044cc5b8dafc093ab62287a
Cr-Commit-Position: refs/heads/master@{#295655}

[Gaja, 2014-09-18 06:36:24]

@asvitkine
Please take a look. Thanks.
And, does this require a unit test?

[Alexei Svitkine (slow), 2014-09-18 13:38:22]

LGTM

[Gaja, 2014-09-18 15:16:07]

The CQ bit was checked by gajendra.n@samsung.com

[commit-bot: I haz the power, 2014-09-18 15:17:45]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/581053002/1

[commit-bot: I haz the power, 2014-09-18 17:18:41]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-09-18 17:18:42]

Exceeded time limit waiting for builds to trigger.

[Gaja, 2014-09-18 17:44:47]

The CQ bit was checked by gajendra.n@samsung.com

[commit-bot: I haz the power, 2014-09-18 17:45:42]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/581053002/1

[commit-bot: I haz the power, 2014-09-18 19:47:28]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-09-18 19:47:29]

Exceeded time limit waiting for builds to trigger.

[Gaja, 2014-09-19 02:48:22]

The CQ bit was checked by gajendra.n@samsung.com

[commit-bot: I haz the power, 2014-09-19 02:49:24]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/581053002/1

[commit-bot: I haz the power, 2014-09-19 03:46:51]

Committed patchset #1 (id:1) as ee85a098a490acd6fdb232c2847380be1e178f93

[commit-bot: I haz the power, 2014-09-19 03:47:50]

Patchset 1 (id:??) landed as
https://crrev.com/33900453c57e5f669044cc5b8dafc093ab62287a
Cr-Commit-Position: refs/heads/master@{#295655}