Add checked_cast to avoid Windows compiler errors

Add checked_cast to avoid Windows compiler errors

BUG=589852
TEST=compiles

Committed: https://crrev.com/7137af07ab066ab99a5d216f3c06583af2ba765c
Cr-Commit-Position: refs/heads/master@{#377748}

[jrummell, 2016-02-25 19:02:12]

jrummell@chromium.org changed reviewers:
+ dalecurtis@chromium.org

[jrummell, 2016-02-25 19:02:13]

PTAL. No idea why 2 weeks later it's not compiling on Windows 64-bit.

[DaleCurtis, 2016-02-25 19:06:58]

dalecurtis@chromium.org changed reviewers:
+ kcc@chromium.org

[DaleCurtis, 2016-02-25 19:06:58]

Not sure you want checked_cast here. I don't know what size of data the fuzzer
will try to send in. If it's sending realistic sizes this seems fine.

[DaleCurtis, 2016-02-25 19:33:16]

offline John mentioned the max size is 10k, so lgtm

[jrummell, 2016-02-25 22:39:43]

For a component build, need to add dependency to //base.

[jrummell, 2016-02-25 23:30:15]

The CQ bit was checked by jrummell@chromium.org

[jrummell, 2016-02-25 23:30:15]

The patchset sent to the CQ was uploaded after l-g-t-m from
dalecurtis@chromium.org
Link to the patchset: https://codereview.chromium.org/1725123006/#ps20001
(title: "add //base dependency")

[commit-bot: I haz the power, 2016-02-25 23:33:00]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1725123006/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1725123006/20001

[commit-bot: I haz the power, 2016-02-26 01:18:45]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-02-26 01:19:53]

Description was changed from

==========
Add checked_cast to avoid Windows compiler errors

BUG=589852
TEST=compiles
==========

to

==========
Add checked_cast to avoid Windows compiler errors

BUG=589852
TEST=compiles

Committed: https://crrev.com/7137af07ab066ab99a5d216f3c06583af2ba765c
Cr-Commit-Position: refs/heads/master@{#377748}
==========

[commit-bot: I haz the power, 2016-02-26 01:19:54]

Patchset 2 (id:??) landed as
https://crrev.com/7137af07ab066ab99a5d216f3c06583af2ba765c
Cr-Commit-Position: refs/heads/master@{#377748}