Add a missing test for ensuring that context shapes stay the same when recompiling.

Add a missing test for ensuring that context shapes stay the same when recompiling.

This would've caught the "preparser tracking only unresolved variables
but no declarations is not enough" bug.

BUG=

Committed: https://crrev.com/df9d8c01f29ec50cbc792d8d6ecda3d5722c1a59
Cr-Commit-Position: refs/heads/master@{#39532}

[marja, 2016-09-19 12:20:47]

marja@chromium.org changed reviewers:
+ mstarzinger@chromium.org

[marja, 2016-09-19 12:20:47]

mstarzinger@, ptal

[Michael Starzinger, 2016-09-20 09:06:56]

LGTM.

[marja, 2016-09-20 09:07:26]

The CQ bit was checked by marja@chromium.org

[commit-bot: I haz the power, 2016-09-20 09:07:35]

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, 2016-09-20 09:35:23]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-09-20 09:35:48]

Description was changed from

==========
Add a missing test for ensuring that context shapes stay the same when
recompiling.

This would've caught the "preparser tracking only unresolved variables
but no declarations is not enough" bug.

BUG=
==========

to

==========
Add a missing test for ensuring that context shapes stay the same when
recompiling.

This would've caught the "preparser tracking only unresolved variables
but no declarations is not enough" bug.

BUG=

Committed: https://crrev.com/df9d8c01f29ec50cbc792d8d6ecda3d5722c1a59
Cr-Commit-Position: refs/heads/master@{#39532}
==========

[commit-bot: I haz the power, 2016-09-20 09:35:48]

Patchset 2 (id:??) landed as
https://crrev.com/df9d8c01f29ec50cbc792d8d6ecda3d5722c1a59
Cr-Commit-Position: refs/heads/master@{#39532}