Add text continuation to app info dialog buttons

Add text continuation to app info dialog buttons

Adds an ellipsis to the 'Create shortcuts' and 'Remove' buttons, which
both require additional user input.

BUG=448359
Committed: https://crrev.com/78afb85b32b013e2b8af772e0dc36d3bb5c04808
Cr-Commit-Position: refs/heads/master@{#316926}

[tsergeant, 2015-02-16 06:10:07]

tsergeant@chromium.org changed reviewers:
+ sashab@chromium.org

[sashab, 2015-02-18 05:18:36]

lgtm upon approval from UI in the bug.

[tsergeant, 2015-02-18 22:44:23]

The CQ bit was checked by tsergeant@chromium.org

[commit-bot: I haz the power, 2015-02-18 22:44:51]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/926993002/1

[commit-bot: I haz the power, 2015-02-18 23:55:57]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-18 23:56:24]

Patchset 1 (id:??) landed as
https://crrev.com/78afb85b32b013e2b8af772e0dc36d3bb5c04808
Cr-Commit-Position: refs/heads/master@{#316926}