libvpx.gyp: try again to fix Clang's -Wstring-conversion warning

libvpx.gyp: try again to fix Clang's -Wstring-conversion warning

Using -Wno-conversion didn't work, since -Wstring-conversion was added
afterwards. Using clang_warning_flags_unset should work better.

BUG=431803
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=293280

[hans, 2014-12-05 23:56:12]

hans@chromium.org changed reviewers:
+ tomfinegan@chromium.org

[hans, 2014-12-05 23:56:13]

I must have bungled this last time.

This time I tested that it works with the new Clang version for both Android and
Linux (and that it fails without my change).

[jzern, 2014-12-06 00:25:29]

On 2014/12/05 23:56:13, hans wrote:
> I must have bungled this last time.
> 
> This time I tested that it works with the new Clang version for both Android
and
> Linux (and that it fails without my change).

https://gerrit.chromium.org/gerrit/#/c/73186/

should clear the rest. amusingly 4/5 are assert("...") which would never fail,
courtesy of 4 different authors...

[Tom Finegan, 2014-12-06 00:31:18]

On 2014/12/06 00:25:29, jzern wrote:
> On 2014/12/05 23:56:13, hans wrote:
> > I must have bungled this last time.
> > 
> > This time I tested that it works with the new Clang version for both Android
> and
> > Linux (and that it fails without my change).
> 
> https://gerrit.chromium.org/gerrit/#/c/73186/
> 
> should clear the rest. amusingly 4/5 are assert("...") which would never fail,
> courtesy of 4 different authors...

lgtm

Is there a gn change, or is that already ok?

[hans, 2014-12-06 00:34:00]

On 2014/12/06 00:31:18, Tom Finegan wrote:
> lgtm
> 
> Is there a gn change, or is that already ok?

the gn build already works

[hans, 2014-12-06 00:34:03]

The CQ bit was checked by hans@chromium.org

[commit-bot: I haz the power, 2014-12-06 00:35:06]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/786543002/1

[commit-bot: I haz the power, 2014-12-06 00:36:20]

Committed patchset #1 (id:1) as
http://src.chromium.org/viewvc/chrome?view=rev&revision=293280