[turbofan] First rudimentary inlining heuristic.

[turbofan] First rudimentary inlining heuristic.

This is a first prototype for a rudimentary inlining heuristic allowing
enabling of general inlining based existing budget flags. Also note that
this approach does not yet work for multi-level inlining, for now the
list of candidates is processed exactly once.

R=bmeurer@chromium.org

Committed: https://crrev.com/8ff6a0c005176d2493d425a210b9ab47d11c70c6
Cr-Commit-Position: refs/heads/master@{#31249}

[Benedikt Meurer, 2015-10-13 18:54:37]

LGTM for landing as first step.

[Michael Starzinger, 2015-10-14 08:33:03]

The CQ bit was checked by mstarzinger@chromium.org

[commit-bot: I haz the power, 2015-10-14 08:33:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1406543002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1406543002/20001

[commit-bot: I haz the power, 2015-10-14 08:37:13]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-10-14 08:37:30]

Patchset 2 (id:??) landed as
https://crrev.com/8ff6a0c005176d2493d425a210b9ab47d11c70c6
Cr-Commit-Position: refs/heads/master@{#31249}