Make calls to any extension action (page/browserAction) API not kill the

Make calls to any extension action (page/browserAction) API not kill the
extension if it doesn't have an action specified. Just show an error.


BUG=130092
TEST=Get an extension with a background page but no page/browserAction.
     Enter "chrome.browserAction.getTitle({}, function(){})". Should show
     error not kill the extension.


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=141734

[not at google - send to devlin, 2012-06-12 14:35:18]

Matt wins extension roulette.

[Matt Perry, 2012-06-12 19:01:19]

Ideally the browserAction namespace would not be defined if the extension has no
browser action. But if that's hard to do, this is the next best thing. LGTM

[not at google - send to devlin, 2012-06-12 19:25:24]

Yeah, I would like to do that at some point. There are a few other APIs which we
should do that for... pageAction(s) and omnibox.

I believe that this was going to happen automatically with Aaron's Feature
system, but that seems to have stalled... hmm. Anyway, until that day, or maybe
sooner if that day is never going to come... I will just do this.

[commit-bot: I haz the power, 2012-06-12 19:29:18]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/kalman@chromium.org/10533108/5001

[commit-bot: I haz the power, 2012-06-12 20:57:59]

Change committed as 141734