Add more logging to cc scheduler to debug RAF frame loss.

Add more logging to cc scheduler to debug RAF frame loss.

BUG=393331
TEST=bots
R=brianderson@chromium.org

Committed: https://crrev.com/53418dcad84c86e6e93d9133380e37c976941c3d
Cr-Commit-Position: refs/heads/master@{#293046}

[Zhenyao Mo, 2014-09-02 21:42:17]

Brian, please take a look.

[brianderson, 2014-09-02 22:24:28]

https://codereview.chromium.org/533973002/diff/1/cc/scheduler/scheduler_state...
File cc/scheduler/scheduler_state_machine.cc (right):

https://codereview.chromium.org/533973002/diff/1/cc/scheduler/scheduler_state...
cc/scheduler/scheduler_state_machine.cc:1090: return base::StringPrintf("%c %d
%d %d %d %d %d %d %d",
Do some of these %d's need to be %c's?

lgtm if this if fixed.

[Zhenyao Mo, 2014-09-02 22:34:21]

The CQ bit was checked by zmo@chromium.org

[commit-bot: I haz the power, 2014-09-02 22:36:03]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/zmo@chromium.org/533973002/20001

[commit-bot: I haz the power, 2014-09-02 23:34:23]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  win_chromium_rel_swarming on tryserver.chromium.win
(http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_rel_...)

[commit-bot: I haz the power, 2014-09-03 01:54:57]

Committed patchset #2 (id:20001) as 5602c4251c6b6f8cfbefc6101f308dad9ea369f8

[commit-bot: I haz the power, 2014-09-10 03:22:44]

Patchset 2 (id:??) landed as
https://crrev.com/53418dcad84c86e6e93d9133380e37c976941c3d
Cr-Commit-Position: refs/heads/master@{#293046}