[runtime] Remove Runtime::KeyedGetObjectProperty function.

[runtime] Remove Runtime::KeyedGetObjectProperty function.

R=conradw@chromium.org

Committed: https://crrev.com/763c68e4a39148a72f37a8a1c207b6420991794d
Cr-Commit-Position: refs/heads/master@{#30675}

[Michael Starzinger, 2015-09-09 16:17:33]

Motivation: I am trying to reduce the amount of grab-bag functions on the
{Runtime} class. Ideally the only functions in that class have to do with
building and maintaining the list of available runtime functions and intrinsic.
Everything else should live in its own component.

[conradw, 2015-09-10 10:38:48]

LGTM (but as discussed I'm not a committer)

[Benedikt Meurer, 2015-09-10 10:46:30]

bmeurer@chromium.org changed reviewers:
+ bmeurer@chromium.org

[Benedikt Meurer, 2015-09-10 10:46:31]

LGTM (rubber, rubber)

[Michael Starzinger, 2015-09-10 10:46:43]

The CQ bit was checked by mstarzinger@chromium.org

[commit-bot: I haz the power, 2015-09-10 10:46:49]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1317033009/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1317033009/1

[commit-bot: I haz the power, 2015-09-10 10:48:57]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-10 10:49:19]

Patchset 1 (id:??) landed as
https://crrev.com/763c68e4a39148a72f37a8a1c207b6420991794d
Cr-Commit-Position: refs/heads/master@{#30675}