[NaCl SDK] Run browser tests with --disable-component-update

[NaCl SDK] Run browser tests with --disable-component-update

The PNaCl installer is more aggressive right now and
checks for updates on each pexe load. Disable this behavior
to test the copy of PNaCl that is already built instead of
downloading the "official" one.

A separate CL will make this less aggressive, but it's not
clear if that will be flexible enough to detect pre-built
copies of PNaCl vs official copies. E.g., if it's just based
on min_version vs cur_version of official copies then it
will ignore the pre-built copies.

Re-enable nacl_io_test. It was timing out before because
of the installation delay. The installation delay is less
now due to component updater timer tweaks (2 seconds),
but having --disable-component-update reduces that to 0.

BUG=315253
NOTRY=true
(sdk only)

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=234638

[Sam Clegg, 2013-11-12 19:26:06]

So we were seeing timeouts at 40 seconds.  Are you saying
that even without this change that delay is only 2 seconds?

either way, lgtm.

[Sam Clegg, 2013-11-12 19:26:47]

Our convention is [NaCl SDK] (with a space) in the CL description.

[jvoung (off chromium), 2013-11-12 19:31:32]

On 2013/11/12 19:26:06, Sam Clegg wrote:
> So we were seeing timeouts at 40 seconds.  Are you saying
> that even without this change that delay is only 2 seconds?
> 
> either way, lgtm.

So at one point there was an added delay of 8 seconds. Even without this change
the added delay is 2 seconds. This change takes away the added delay.

For some reason, the test seems to take 36 seconds anyway (at least from what I
could tell in the logs), so that original 8 seconds bumped it past 40.  The pexe
doesn't seem too big, so it shouldn't really take 36 seconds in the first place?

[commit-bot: I haz the power, 2013-11-12 21:12:03]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jvoung@chromium.org/70633002/30001

[commit-bot: I haz the power, 2013-11-12 21:23:15]

Change committed as 234638