Fix build with disable_nacl=1

Fix build with disable_nacl=1

Make the isolate generation aware that the NaCl
can be disabled and don't try to use those files
if it is disabled.

BUG=428264
R=maruel@chromium.org
TEST=./build/gyp_chromium -Ddisable_nacl=1 && ninja -C out/Release

Committed: https://crrev.com/4b8c1e64ccae3a73fbf454ac33cd0879bbbdfa01
Cr-Commit-Position: refs/heads/master@{#302257}

[elecro, 2014-10-29 10:32:08]

Please take a look.

[M-A Ruel, 2014-10-29 13:06:16]

Thanks! Note that since there's no CI testing on this configuration, it's bound
to fail again but I'm fine with a "good enough" solution.

Only one question.

https://codereview.chromium.org/687173002/diff/1/chrome/browser_tests.isolate
File chrome/browser_tests.isolate (right):

https://codereview.chromium.org/687173002/diff/1/chrome/browser_tests.isolate...
chrome/browser_tests.isolate:96: '../third_party/bidichecker/',
That's surprising? It's not built otherwise?

[elecro, 2014-10-29 14:04:03]

https://codereview.chromium.org/687173002/diff/1/chrome/browser_tests.isolate
File chrome/browser_tests.isolate (right):

https://codereview.chromium.org/687173002/diff/1/chrome/browser_tests.isolate...
chrome/browser_tests.isolate:96: '../third_party/bidichecker/',
On 2014/10/29 13:06:16, M-A Ruel wrote:
> That's surprising? It's not built otherwise?

Ahh.. sorry this was copied from the above (OS=="linux" or OS=="win") entry. It
shouldn't be here. I'll update the CL.

[elecro, 2014-10-31 09:40:19]

On 2014/10/29 14:04:03, elecro wrote:
> https://codereview.chromium.org/687173002/diff/1/chrome/browser_tests.isolate
> File chrome/browser_tests.isolate (right):
> 
>
https://codereview.chromium.org/687173002/diff/1/chrome/browser_tests.isolate...
> chrome/browser_tests.isolate:96: '../third_party/bidichecker/',
> On 2014/10/29 13:06:16, M-A Ruel wrote:
> > That's surprising? It's not built otherwise?
> 
> Ahh.. sorry this was copied from the above (OS=="linux" or OS=="win") entry.
It
> shouldn't be here. I'll update the CL.

CL updated. Please take another look. Thanks in advance!

[M-A Ruel, 2014-10-31 12:15:08]

lgtm

[elecro, 2014-10-31 12:52:56]

The CQ bit was checked by pgal.u-szeged@partner.samsung.com

[commit-bot: I haz the power, 2014-10-31 12:53:17]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/687173002/20001

[commit-bot: I haz the power, 2014-10-31 13:53:43]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2014-10-31 13:54:25]

Patchset 2 (id:??) landed as
https://crrev.com/4b8c1e64ccae3a73fbf454ac33cd0879bbbdfa01
Cr-Commit-Position: refs/heads/master@{#302257}