Log call arguments when extensions call the Chrome preferences API

Log call arguments when extensions call the Chrome preferences API.

Without this change, all calls to get or set preferences simply show up
as "types.ChromeSetting.get" or "types.ChromeSetting.set" in the
extension activity log.  With this change, the argument list will
include the name of the preference being changed and (when the
preference is changed) the new value.

BUG=356314
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=260231

[mvrable, 2014-03-27 18:35:14]

Here is a patch for bug #356314, which simply adds the affected calls to the
argument whitelist.  I haven't added tests (I'm not sure if they'd be useful or
not); I did do some manual testing to make sure that calls to read and change
chrome.privacy.services.autofillEnabled are recorded properly with this patch. 
If you want unit tests I can work on those but won't be able to get to them
immediately.

--Michael Vrable

[not at google - send to devlin, 2014-03-27 18:36:53]

lgtm for me but you might want to get activity log owner like felt@

[mvrable, 2014-03-27 18:45:45]

I'm one of the co-owners of the activity log now so I don't think her LGTM is
required (unless I misunderstand the enforced commit rules).  felt@ is CCed.

Still happy to take feedback--felt@, do you have any comments on that patch or
does it look good to you?

--Michael Vrable

[felt, 2014-03-28 02:00:12]

lgtm, but as mvrable said, he's an OWNER now so my ack isn't really needed :)

[mvrable, 2014-03-28 03:58:12]

The CQ bit was checked by mvrable@chromium.org

[commit-bot: I haz the power, 2014-03-28 03:58:40]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mvrable@chromium.org/214843003/1

[commit-bot: I haz the power, 2014-03-28 07:30:23]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-03-28 07:30:23]

Retried try job too often on ios_dbg_simulator for step(s) base_unittests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=ios_dbg_si...

[not at google - send to devlin, 2014-03-28 14:56:19]

I wasn't insinuating that you weren't an owner, just that I'm not and I'm
missing a lot of the surrounding context.

[mvrable, 2014-03-28 16:39:23]

The CQ bit was checked by mvrable@chromium.org

[commit-bot: I haz the power, 2014-03-28 16:39:30]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mvrable@chromium.org/214843003/1

[commit-bot: I haz the power, 2014-03-28 19:18:58]

Change committed as 260231