Add ifdef guard to WorkletModuleTreeClient.h

Add ifdef guard to WorkletModuleTreeClient.h

We use "jumbo" compilation of blink in our project. The main idea is
to compile some number of cc files as one compilation unit. It
significantly speeds up compilation time of blink. With "jumbo"
enabled there is compilation error due to lack of ifdef
guard in file WorkletModuleTreeClient.h.

BUG=732727
Review-Url: https://codereview.chromium.org/2935823003
Cr-Commit-Position: refs/heads/master@{#478967}
Committed: https://chromium.googlesource.com/chromium/src/+/e8ebeebd9d4e9c9b0459f8adcfc1bcc5b7af08b5

[ckulakowski, 2017-06-13 08:37:26]

ckulakowski@opera.com changed reviewers:
+ nhiroki@chromium.org

[nhiroki, 2017-06-13 09:23:22]

LGTM. Thank you for fixing this!

[ckulakowski, 2017-06-13 09:25:34]

The CQ bit was checked by ckulakowski@opera.com

[commit-bot: I haz the power, 2017-06-13 09:25:50]

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, 2017-06-13 11:38:48]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1497345934738450, "parent_rev":
"813f94f9d2cb7e696795053bc920276ff15d5ba4", "commit_rev":
"e8ebeebd9d4e9c9b0459f8adcfc1bcc5b7af08b5"}

[commit-bot: I haz the power, 2017-06-13 11:38:58]

Description was changed from

==========
Add ifdef guard to WorkletModuleTreeClient.h

We use "jumbo" compilation of blink in our project. The main idea is
to compile some number of cc files as one compilation unit. It
significantly speeds up compilation time of blink. With "jumbo"
enabled there is compilation error due to lack of ifdef
guard in file WorkletModuleTreeClient.h.

BUG=732727
==========

to

==========
Add ifdef guard to WorkletModuleTreeClient.h

We use "jumbo" compilation of blink in our project. The main idea is
to compile some number of cc files as one compilation unit. It
significantly speeds up compilation time of blink. With "jumbo"
enabled there is compilation error due to lack of ifdef
guard in file WorkletModuleTreeClient.h.

BUG=732727

Review-Url: https://codereview.chromium.org/2935823003
Cr-Commit-Position: refs/heads/master@{#478967}
Committed:
https://chromium.googlesource.com/chromium/src/+/e8ebeebd9d4e9c9b0459f8adcfc1...
==========

[commit-bot: I haz the power, 2017-06-13 11:39:00]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/e8ebeebd9d4e9c9b0459f8adcfc1...