cc: Add logging to help pinpoint lost SetNeedsCommit

cc: Add logging to help pinpoint lost SetNeedsCommit

BUG=393331
NOTRY=true

Committed: https://crrev.com/15203f94a12202d25359ea44ffa2666c664b79dc
Cr-Commit-Position: refs/heads/master@{#294097}

[brianderson, 2014-09-10 00:12:18]

brianderson@chromium.org changed reviewers:
+ kbr@chromium.org, zmo@chromium.org

[brianderson, 2014-09-10 00:12:19]

ptal.

[Ken Russell (switch to Gerrit), 2014-09-10 00:43:41]

Thank you for putting this in. LGTM with a couple of questions.

https://codereview.chromium.org/559793002/diff/1/cc/trees/thread_proxy.cc
File cc/trees/thread_proxy.cc (right):

https://codereview.chromium.org/559793002/diff/1/cc/trees/thread_proxy.cc#new...
cc/trees/thread_proxy.cc:262: VLOG(2) <<
"ThreadProxy::SendCommitRequestToImplThreadIfNeeded";
Would it be better to log earlier and include the value of
main().commit_request_sent_to_impl_thread?

https://codereview.chromium.org/559793002/diff/1/cc/trees/thread_proxy.cc#new...
cc/trees/thread_proxy.cc:282: VLOG(2) << "ThreadProxy::SetNeedsAnimate";
Same question about logging earlier here.

[brianderson, 2014-09-10 01:07:33]

The CQ bit was checked by brianderson@chromium.org

[brianderson, 2014-09-10 01:07:49]

The CQ bit was checked by brianderson@chromium.org

[commit-bot: I haz the power, 2014-09-10 01:09:28]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/brianderson@chromium.org/559793002/20001

[commit-bot: I haz the power, 2014-09-10 03:08:12]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-09-10 03:08:13]

Try jobs failed on following builders:
  win_chromium_x64_rel_swarming on tryserver.chromium.win
(http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_x64_...)

[Ken Russell (switch to Gerrit), 2014-09-10 03:48:16]

The CQ bit was checked by kbr@chromium.org

[commit-bot: I haz the power, 2014-09-10 03:50:28]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/brianderson@chromium.org/559793002/20001

[commit-bot: I haz the power, 2014-09-10 03:51:50]

Committed patchset #2 (id:20001) as ef6914691930a667196d5fbbb001ce4003c695ac

[commit-bot: I haz the power, 2014-09-10 03:58:56]

Patchset 2 (id:??) landed as
https://crrev.com/15203f94a12202d25359ea44ffa2666c664b79dc
Cr-Commit-Position: refs/heads/master@{#294097}