Inline binding_helpers.h

Inline binding_helpers.h

This code is inlined all over the place, however, there's no good
location to put it. Just factoring it out in two places, however,
doesn't really make sense, so don't do it

R=mkwst@chromium.org
BUG=478250
Committed: https://crrev.com/df8e8c6e3fa140af219a3c6440906baa7d84d620
Cr-Commit-Position: refs/heads/master@{#330308}

[jochen (gone - plz use gerrit), 2015-05-17 13:49:29]

2nd last before I'll add the DEPS file

[Mike West, 2015-05-17 14:04:50]

Yeah, factoring it out doesn't make sense. LGTM.

[jochen (gone - plz use gerrit), 2015-05-17 14:07:17]

The CQ bit was checked by jochen@chromium.org

[commit-bot: I haz the power, 2015-05-17 14:07:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1141993002/1

[commit-bot: I haz the power, 2015-05-17 14:18:06]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-18 11:32:48]

Patchset 1 (id:??) landed as
https://crrev.com/df8e8c6e3fa140af219a3c6440906baa7d84d620
Cr-Commit-Position: refs/heads/master@{#330308}