android_webview: stop using system ashmem.

android_webview: stop using system ashmem.

To support unbundled updates we need to stop depending on system
libraries. Disable using the system ashmem APIs in libcutils and instead
link Chromium's copy, and remove support for using the version in
libcutils as there are no other users.

This increases binary size by <1KB.

BUG=409851
Committed: https://crrev.com/3acfbb2b8bed0d78aa4af78c5e34e289122b79e5
Cr-Commit-Position: refs/heads/master@{#293916}

[Torne, 2014-09-08 14:48:14]

torne@chromium.org changed reviewers:
+ primiano@chromium.org

[Primiano Tucci (use gerrit), 2014-09-08 16:03:31]

lgtm

[Torne, 2014-09-08 16:07:25]

torne@chromium.org changed reviewers:
+ digit@chromium.org

[Torne, 2014-09-08 16:07:26]

Digit, are you intending to still be the owner of third_party/ashmem? If so can
you review this? Otherwise, er, can you maybe review this anyway and then also
find a replacement? ;)

[digit1, 2014-09-09 00:01:24]

On 2014/09/08 16:07:26, Torne wrote:

lgtm

> Digit, are you intending to still be the owner of third_party/ashmem? If so
can
> you review this? Otherwise, er, can you maybe review this anyway and then also
> find a replacement? ;)

I have no specific desire to still be the owner, but if you want to keep me
there, help yourself :-)

Thanks

[Torne, 2014-09-09 09:43:34]

The CQ bit was checked by torne@chromium.org

[commit-bot: I haz the power, 2014-09-09 09:45:03]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/torne@chromium.org/550213002/1

[commit-bot: I haz the power, 2014-09-09 10:50:34]

Committed patchset #1 (id:1) as 0e9482bbe9ab771030c4f79241000bc6c900bf62

[commit-bot: I haz the power, 2014-09-10 03:52:40]

Patchset 1 (id:??) landed as
https://crrev.com/3acfbb2b8bed0d78aa4af78c5e34e289122b79e5
Cr-Commit-Position: refs/heads/master@{#293916}