Add cflags for GCC 4.8 builds on Android.

Add cflags for GCC 4.8 builds on Android.

This reinstates cflags we used for GCC 4.8 for WebView builds.

BUG=407545
NOTRY=true

Committed: https://crrev.com/c16332e8e1f6bc14d452a3d0d6201fca57f1a2d9
Cr-Commit-Position: refs/heads/master@{#293935}

[Fabrice (no longer in Chrome), 2014-09-09 12:11:12]

fdegans@chromium.org changed reviewers:
+ pasko@chromium.org, torne@chromium.org

[pasko, 2014-09-09 13:05:20]

lgtm

[Fabrice (no longer in Chrome), 2014-09-09 13:12:14]

The CQ bit was checked by fdegans@chromium.org

[commit-bot: I haz the power, 2014-09-09 13:14:22]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/fdegans@chromium.org/555503006/1

[Fabrice (no longer in Chrome), 2014-09-09 13:16:19]

The CQ bit was unchecked by fdegans@chromium.org

[Torne, 2014-09-09 13:19:34]

The compiler issues seem to be happening on gcc 4.9 on arm64 as well, so I think
we need to investigate this further.

[commit-bot: I haz the power, 2014-09-09 13:19:47]

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

[Torne, 2014-09-09 13:54:40]

On 2014/09/09 13:19:34, Torne wrote:
> The compiler issues seem to be happening on gcc 4.9 on arm64 as well, so I
think
> we need to investigate this further.

I'll try and reproduce the issues locally and file a bug with teh compiler team.
For now I'm gonna CQ this again (sorry for changing my mind) and check that
cleans up the problem :)

[Torne, 2014-09-09 13:54:42]

The CQ bit was checked by torne@chromium.org

[commit-bot: I haz the power, 2014-09-09 13:55:13]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/fdegans@chromium.org/555503006/1

[commit-bot: I haz the power, 2014-09-09 13:56:29]

Committed patchset #1 (id:1) as 1241fbf1622516f34b48a7a977e4cca8f6aaa76a

[commit-bot: I haz the power, 2014-09-10 03:53:15]

Patchset 1 (id:??) landed as
https://crrev.com/c16332e8e1f6bc14d452a3d0d6201fca57f1a2d9
Cr-Commit-Position: refs/heads/master@{#293935}