Rename the 'or' function in the chromevox next output language to 'if'.

Rename the 'or' function in the chromevox next output language to 'if'.

The semantic of this function matches the usual semantic of if better
than or, since or usually returns the first of its arguments that is
true, while if evaluates a condition and returns a second or third
argument depending of the truth value of its first ditto.

R=dtseng@chromium.org
BUG=

Committed: https://crrev.com/6e4300d896a8d4103fdb43276521feaf0a6dcd28
Cr-Commit-Position: refs/heads/master@{#317059}

[David Tseng, 2015-02-19 16:14:58]

The CQ bit was checked by dtseng@chromium.org

[David Tseng, 2015-02-19 16:14:58]

lgtm

[commit-bot: I haz the power, 2015-02-19 16:15:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/939153002/1

[commit-bot: I haz the power, 2015-02-19 16:37:14]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-19 16:37:47]

Patchset 1 (id:??) landed as
https://crrev.com/6e4300d896a8d4103fdb43276521feaf0a6dcd28
Cr-Commit-Position: refs/heads/master@{#317059}