Hide the "Add new services" menu from Files app when running as dialog.

Hide the "Add new services" menu from Files app when running as dialog.

TEST=Tested manually in open dialog, and standalone Files app.
BUG=487905
Committed: https://crrev.com/f73adcf5aae849b0508435c6888b09993daa8608
Cr-Commit-Position: refs/heads/master@{#329804}

[mtomasz, 2015-05-14 02:29:37]

mtomasz@chromium.org changed reviewers:
+ yawano@chromium.org

[mtomasz, 2015-05-14 02:29:46]

@yawano: PTAL. Thanks.

[yawano, 2015-05-14 04:02:49]

lgtm.

[mtomasz, 2015-05-14 04:20:50]

The CQ bit was checked by mtomasz@chromium.org

[mtomasz, 2015-05-14 04:20:50]

The patchset sent to the CQ was uploaded after l-g-t-m from yawano@chromium.org
Link to the patchset: https://codereview.chromium.org/1134213006/#ps20001
(title: "Fixed tests.")

[commit-bot: I haz the power, 2015-05-14 04:21:05]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1134213006/20001

[commit-bot: I haz the power, 2015-05-14 04:49:20]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-05-14 04:50:55]

Patchset 2 (id:??) landed as
https://crrev.com/f73adcf5aae849b0508435c6888b09993daa8608
Cr-Commit-Position: refs/heads/master@{#329804}