content: Disable ChildDiscardableSharedMemoryManager browser tests.

content: Disable ChildDiscardableSharedMemoryManager browser tests.

These tests are failing on some machines. The failures seem to be
test setup related rather than failures related to the specific
logic that these tests are trying to test.

BUG=459703
Committed: https://crrev.com/c2b8ddd55bc67bce06171337275f66b99e72be12
Cr-Commit-Position: refs/heads/master@{#317913}

[reveman, 2015-02-19 17:50:50]

reveman@chromium.org changed reviewers:
+ ashejole@chromium.org, avi@chromium.org

[Avi (use Gerrit), 2015-02-20 20:27:09]

lgtm

Though it would be nice to get real answers as to what's going on.

[reveman, 2015-02-24 22:03:42]

On 2015/02/20 at 20:27:09, avi wrote:
> lgtm
> 
> Though it would be nice to get real answers as to what's going on.

I agree and will try to get to the bottom of this asap.

[reveman, 2015-02-24 22:03:46]

The CQ bit was checked by reveman@chromium.org

[reveman, 2015-02-24 22:03:47]

The patchset sent to the CQ was uploaded after l-g-t-m from avi@chromium.org
Link to the patchset: https://codereview.chromium.org/928903004/#ps20001 (title:
"rebase")

[commit-bot: I haz the power, 2015-02-24 22:04:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/928903004/20001

[commit-bot: I haz the power, 2015-02-24 22:55:42]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-02-24 22:57:40]

Patchset 2 (id:??) landed as
https://crrev.com/c2b8ddd55bc67bce06171337275f66b99e72be12
Cr-Commit-Position: refs/heads/master@{#317913}