Fix blimp native Java tests on platforms with assert.

Fix blimp native Java tests on platforms with assert.

The BlimpNativeInstrumentationTestCase wrapper for blimp tests that need
to load native code to run was not using the UI thread for loading the
library. There was an assert checking for this, but this doesn't execute
on newer platforms, so was not caught during development or in the CQ.

This CL fixes the issue by ensuring that the library is loaded on the
correct thread.

BUG=622236
Committed: https://crrev.com/58701445475f240357b16f4fd2bb46a489247f7d
Cr-Commit-Position: refs/heads/master@{#403965}

[nyquist, 2016-07-06 21:54:06]

nyquist@chromium.org changed reviewers:
+ khushalsagar@chromium.org

[nyquist, 2016-07-06 21:54:07]

khushalsagar: PTAL

[Khushal, 2016-07-06 22:03:47]

On 2016/07/06 21:54:07, nyquist wrote:
> khushalsagar: PTAL

lgtm.

[nyquist, 2016-07-06 22:03:58]

The CQ bit was checked by nyquist@chromium.org

[commit-bot: I haz the power, 2016-07-06 22:04:37]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-07-06 23:07:15]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-06 23:07:30]

CQ bit was unchecked.

[commit-bot: I haz the power, 2016-07-06 23:08:50]

Description was changed from

==========
Fix blimp native Java tests on platforms with assert.

The BlimpNativeInstrumentationTestCase wrapper for blimp tests that need
to load native code to run was not using the UI thread for loading the
library. There was an assert checking for this, but this doesn't execute
on newer platforms, so was not caught during development or in the CQ.

This CL fixes the issue by ensuring that the library is loaded on the
correct thread.

BUG=622236
==========

to

==========
Fix blimp native Java tests on platforms with assert.

The BlimpNativeInstrumentationTestCase wrapper for blimp tests that need
to load native code to run was not using the UI thread for loading the
library. There was an assert checking for this, but this doesn't execute
on newer platforms, so was not caught during development or in the CQ.

This CL fixes the issue by ensuring that the library is loaded on the
correct thread.

BUG=622236

Committed: https://crrev.com/58701445475f240357b16f4fd2bb46a489247f7d
Cr-Commit-Position: refs/heads/master@{#403965}
==========

[commit-bot: I haz the power, 2016-07-06 23:08:51]

Patchset 1 (id:??) landed as
https://crrev.com/58701445475f240357b16f4fd2bb46a489247f7d
Cr-Commit-Position: refs/heads/master@{#403965}