Change type of sample_count_sum from int to uint64_t to fix possible overflow

Change type of sample_count_sum from int to uint64_t to fix possible overflow

BUG=644373
Committed: https://crrev.com/5a30782ddb6a7c5f4a1a073253e4a162d82864df
Cr-Commit-Position: refs/heads/master@{#417490}

[kqyang, 2016-09-08 23:10:09]

kqyang@chromium.org changed reviewers:
+ wfh@chromium.org, wolenetz@chromium.org

[kqyang, 2016-09-08 23:10:10]

Please review!

[Will Harris, 2016-09-08 23:15:54]

lgtm

[wolenetz, 2016-09-08 23:44:22]

The CQ bit was checked by wolenetz@chromium.org

[wolenetz, 2016-09-08 23:44:23]

lgtm

[commit-bot: I haz the power, 2016-09-08 23:44:42]

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, 2016-09-08 23:55:12]

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

[commit-bot: I haz the power, 2016-09-08 23:55:13]

Try jobs failed on following builders:
  win_clang on master.tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_clang/builds/...)

[kqyang, 2016-09-09 01:37:38]

The CQ bit was checked by kqyang@chromium.org

[commit-bot: I haz the power, 2016-09-09 01:38:08]

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, 2016-09-09 03:14:17]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-09 03:16:59]

Description was changed from

==========
Change type of sample_count_sum from int to uint64_t to fix possible overflow

BUG=644373
==========

to

==========
Change type of sample_count_sum from int to uint64_t to fix possible overflow

BUG=644373

Committed: https://crrev.com/5a30782ddb6a7c5f4a1a073253e4a162d82864df
Cr-Commit-Position: refs/heads/master@{#417490}
==========

[commit-bot: I haz the power, 2016-09-09 03:17:00]

Patchset 1 (id:??) landed as
https://crrev.com/5a30782ddb6a7c5f4a1a073253e4a162d82864df
Cr-Commit-Position: refs/heads/master@{#417490}