Updating App Remoting build files to include an OAuth2 client ID and manifest key which we will set…

Updating App Remoting build files to include an OAuth2 client ID and manifest key which we will set in the manifest at build time.  This removes the need to run any scripts before uploading to the webstore.

Chromoting updates will be handled in a subsequent change (TODO added).

Also made a few changes to handle the new prod_testing environment.

BUG=

Committed: https://crrev.com/ae2804289a728d5be2172f83e5e3ba6a428280aa
Cr-Commit-Position: refs/heads/master@{#324067}

[joedow, 2015-04-07 01:22:27]

joedow@chromium.org changed reviewers:
+ garykac@chromium.org

[joedow, 2015-04-07 01:22:28]

This changes updates the app remoting build mechanism to pull the OAuth2 client
id and manifest key from the GYP file.

Also added support for the new prod_testing environment.

PTAL!

[garykac, 2015-04-07 17:22:29]

lgtm

[joedow, 2015-04-07 17:52:28]

The CQ bit was checked by joedow@chromium.org

[commit-bot: I haz the power, 2015-04-07 17:53:05]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1062963002/1

[commit-bot: I haz the power, 2015-04-07 17:57:48]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-07 17:58:36]

Patchset 1 (id:??) landed as
https://crrev.com/ae2804289a728d5be2172f83e5e3ba6a428280aa
Cr-Commit-Position: refs/heads/master@{#324067}