Don't let unittests access LTH from the impl thread.

Don't let unittests access LTH from the impl thread.

This causes racy sadness.

BUG=235188
Committed: https://crrev.com/1aa849117446c8524275bd305226fee8859f0c6f
Cr-Commit-Position: refs/heads/master@{#321398}

[Ian Vollick, 2015-03-19 03:36:28]

vollick@chromium.org changed reviewers:
+ danakj@chromium.org

[danakj, 2015-03-19 16:37:44]

LGTM w/ 1 question

https://codereview.chromium.org/1020803002/diff/1/cc/test/layer_tree_test.cc
File cc/test/layer_tree_test.cc (right):

https://codereview.chromium.org/1020803002/diff/1/cc/test/layer_tree_test.cc#...
cc/test/layer_tree_test.cc:882: DCHECK(!proxy() || proxy()->IsMainThread() ||
proxy()->IsMainThreadBlocked());
when is proxy null? can you say it in a comment?

[Ian Vollick, 2015-03-19 17:46:27]

The CQ bit was checked by vollick@chromium.org

[Ian Vollick, 2015-03-19 17:46:28]

The patchset sent to the CQ was uploaded after l-g-t-m from danakj@chromium.org
Link to the patchset: https://codereview.chromium.org/1020803002/#ps20001
(title: "Added a comment.")

[commit-bot: I haz the power, 2015-03-19 17:46:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1020803002/20001

[commit-bot: I haz the power, 2015-03-19 18:49:20]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-03-19 18:50:05]

Patchset 2 (id:??) landed as
https://crrev.com/1aa849117446c8524275bd305226fee8859f0c6f
Cr-Commit-Position: refs/heads/master@{#321398}