Revert "Add basic crankshaft support for slow-mode for-in to avoid disabling optimizations"

Revert "Add basic crankshaft support for slow-mode for-in to avoid disabling optimizations"

This reverts commit 8c98cc074ef8278ce1c4dcd4790e8aaf6fbeedc6
because it causes flaky failures in the dromaeo.jslibeventprototype
benchmark on Linux/Windows and consistent failures on Android.

Also reverts the followup "Remove kForInStatementIsNotFastCase bailout reason"
(commit ba24e6769615d0ea7f7b5a31c5947769892f93a7) to avoid breaking the build.

BUG=chromium:476592
TBR=verwaest@chromium.org
LOG=y

Committed: https://crrev.com/b054ff46203cc86a2e180f2bb5b45a7106810e9b
Cr-Commit-Position: refs/heads/master@{#27859}

[adamk, 2015-04-15 21:00:04]

adamk@chromium.org changed reviewers:
+ verwaest@chromium.org

[adamk, 2015-04-15 21:00:22]

The CQ bit was checked by adamk@chromium.org

[commit-bot: I haz the power, 2015-04-15 21:00:36]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1066663005/1

[commit-bot: I haz the power, 2015-04-15 21:04:42]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-04-15 21:04:43]

Try jobs failed on following builders:
  v8_presubmit on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_presubmit/builds/2031)

[adamk, 2015-04-15 21:05:23]

The CQ bit was checked by adamk@chromium.org

[commit-bot: I haz the power, 2015-04-15 21:05:36]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1066663005/1

[commit-bot: I haz the power, 2015-04-15 21:28:35]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-15 21:28:43]

Patchset 1 (id:??) landed as
https://crrev.com/b054ff46203cc86a2e180f2bb5b45a7106810e9b
Cr-Commit-Position: refs/heads/master@{#27859}