Fix WTF::HashTable performance regression on Windows.

Fix WTF::HashTable performance regression on Windows.

https://codereview.chromium.org/2585673002 introduced function calls for empty
functions. It seems MSVC doesn't optimize them out.

BUG=680512
Review-Url: https://codereview.chromium.org/2725953003
Cr-Commit-Position: refs/heads/master@{#454209}
Committed: https://chromium.googlesource.com/chromium/src/+/eecb9420efdea1d6c4e882a85e1de607ed317781

[tkent, 2017-03-02 06:23:37]

The CQ bit was checked by tkent@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-03-02 06:24:40]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[tkent, 2017-03-02 06:24:42]

tkent@chromium.org changed reviewers:
+ yutak@chromium.org

[tkent, 2017-03-02 06:24:43]

yutak@, would you review this please?

I verified this CL improved Speedometer on Windows clearly.

[Yuta Kitamura, 2017-03-02 06:43:53]

LGTM, that sounds very likely.

[tkent, 2017-03-02 08:03:38]

The CQ bit was unchecked by tkent@chromium.org

[tkent, 2017-03-02 08:03:39]

The CQ bit was checked by tkent@chromium.org

[commit-bot: I haz the power, 2017-03-02 08:03:47]

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, 2017-03-02 08:08:20]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1488441819774960, "parent_rev":
"70dfd29bb016498ed8e1ff3f5c76948f5f57a6ee", "commit_rev":
"eecb9420efdea1d6c4e882a85e1de607ed317781"}

[commit-bot: I haz the power, 2017-03-02 08:09:02]

Description was changed from

==========
Fix WTF::HashTable performance regression on Windows.

https://codereview.chromium.org/2585673002 introduced function calls for empty
functions. It seems MSVC doesn't optimize them out.

BUG=680512
==========

to

==========
Fix WTF::HashTable performance regression on Windows.

https://codereview.chromium.org/2585673002 introduced function calls for empty
functions. It seems MSVC doesn't optimize them out.

BUG=680512

Review-Url: https://codereview.chromium.org/2725953003
Cr-Commit-Position: refs/heads/master@{#454209}
Committed:
https://chromium.googlesource.com/chromium/src/+/eecb9420efdea1d6c4e882a85e1d...
==========

[commit-bot: I haz the power, 2017-03-02 08:09:03]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/eecb9420efdea1d6c4e882a85e1d...