[wasm] Cleanup unneeded casts to WasmInstanceObject

[wasm] Cleanup unneeded casts to WasmInstanceObject

Plus another minor refactoring.

R=titzer@chromium.org

Review-Url: https://codereview.chromium.org/2590563002
Cr-Commit-Position: refs/heads/master@{#41853}
Committed: https://chromium.googlesource.com/v8/v8/+/fb43021511676963898c3d166d2d921632deb5d0

[Clemens Hammacher, 2016-12-19 18:38:35]

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

[commit-bot: I haz the power, 2016-12-19 18:38:46]

Dry run: 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, 2016-12-19 19:03:04]

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

[commit-bot: I haz the power, 2016-12-19 19:03:06]

Dry run: This issue passed the CQ dry run.

[titzer, 2016-12-19 20:38:02]

lgtm

[Clemens Hammacher, 2016-12-20 11:47:38]

The CQ bit was checked by clemensh@chromium.org

[commit-bot: I haz the power, 2016-12-20 11:47:45]

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, 2016-12-20 11:49:20]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1482234458341180, "parent_rev":
"73afbaa8c142c9ebcc81019824cd2577cea810cd", "commit_rev":
"fb43021511676963898c3d166d2d921632deb5d0"}

[commit-bot: I haz the power, 2016-12-20 11:49:28]

Description was changed from

==========
[wasm] Cleanup unneeded casts to WasmInstanceObject

Plus another minor refactoring.

R=titzer@chromium.org
==========

to

==========
[wasm] Cleanup unneeded casts to WasmInstanceObject

Plus another minor refactoring.

R=titzer@chromium.org

Review-Url: https://codereview.chromium.org/2590563002
Cr-Commit-Position: refs/heads/master@{#41853}
Committed:
https://chromium.googlesource.com/v8/v8/+/fb43021511676963898c3d166d2d921632d...
==========

[commit-bot: I haz the power, 2016-12-20 11:49:28]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/fb43021511676963898c3d166d2d921632d...