[turbofan] Remove deprecated --turbo-osr flag.

[turbofan] Remove deprecated --turbo-osr flag.

The flag in question used to fall-back to Crankshaft whenever an OSR
request couldn't be handled by TurboFan. By now OSR in TurboFan is
sufficiently stabilized that one single --use-osr flag should do it.

R=titzer@chromium.org

Committed: https://crrev.com/434ef2ccfdcac93077a16a0cd88fd5ac012a0d79
Cr-Commit-Position: refs/heads/master@{#36102}

[titzer, 2016-05-09 08:45:17]

lgtm

[Michael Starzinger, 2016-05-09 08:47:43]

The CQ bit was checked by mstarzinger@chromium.org

[commit-bot: I haz the power, 2016-05-09 08:47:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1960043002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1960043002/1

[commit-bot: I haz the power, 2016-05-09 09:10:25]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-09 09:12:10]

Description was changed from

==========
[turbofan] Remove deprecated --turbo-osr flag.

The flag in question used to fall-back to Crankshaft whenever an OSR
request couldn't be handled by TurboFan. By now OSR in TurboFan is
sufficiently stabilized that one single --use-osr flag should do it.

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

to

==========
[turbofan] Remove deprecated --turbo-osr flag.

The flag in question used to fall-back to Crankshaft whenever an OSR
request couldn't be handled by TurboFan. By now OSR in TurboFan is
sufficiently stabilized that one single --use-osr flag should do it.

R=titzer@chromium.org

Committed: https://crrev.com/434ef2ccfdcac93077a16a0cd88fd5ac012a0d79
Cr-Commit-Position: refs/heads/master@{#36102}
==========

[commit-bot: I haz the power, 2016-05-09 09:12:11]

Patchset 1 (id:??) landed as
https://crrev.com/434ef2ccfdcac93077a16a0cd88fd5ac012a0d79
Cr-Commit-Position: refs/heads/master@{#36102}