[turbofan] Remove obsolete JSTypeFeedbackSpecializer and JSTypeFeedbackLowering.

[turbofan] Remove obsolete JSTypeFeedbackSpecializer and JSTypeFeedbackLowering.

Both the JSTypeFeedbackSpecializer and the JSTypeFeedbackLowering is
dead code by now, since the more general JSNativeContextSpecialization
deals with the property/global load/store type feedback in a way that
also interacts properly with inlining.

BUG=v8:4470
LOG=n
R=jarin@chromium.org

Committed: https://crrev.com/71bde166b191f6a459827d9be11424405ba13414
Cr-Commit-Position: refs/heads/master@{#31462}

[Benedikt Meurer, 2015-10-22 06:00:46]

The CQ bit was checked by bmeurer@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-10-22 06:00:57]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1407913003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1407913003/1

[commit-bot: I haz the power, 2015-10-22 06:01:54]

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

[commit-bot: I haz the power, 2015-10-22 06:01:55]

Dry run: Try jobs failed on following builders:
  v8_linux64_asan_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_asan_rel/builds/...)
  v8_linux64_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_rel/builds/10935)
  v8_linux_arm_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_arm_rel/builds/9246)
  v8_linux_dbg on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_dbg/builds/9863)
  v8_linux_gcc_compile_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_gcc_compile_rel/bu...)
  v8_linux_mips64el_compile_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_mips64el_compile_r...)
  v8_linux_nodcheck_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_nodcheck_rel/build...)
  v8_linux_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_rel/builds/10822)
  v8_mac_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_mac_rel/builds/10965)
  v8_presubmit on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_presubmit/builds/6914)

[Benedikt Meurer, 2015-10-22 08:33:22]

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

[Benedikt Meurer, 2015-10-22 08:33:22]

Hey Jaro,

Dead code should be dead!
Please take a look.

Thanks,
Benedikt

[Benedikt Meurer, 2015-10-22 09:12:12]

The CQ bit was checked by bmeurer@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-10-22 09:12:21]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1407913003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1407913003/1

[commit-bot: I haz the power, 2015-10-22 09:22:19]

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

[commit-bot: I haz the power, 2015-10-22 09:22:20]

Dry run: Try jobs failed on following builders:
  v8_win64_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_win64_rel/builds/9880)

[Benedikt Meurer, 2015-10-22 09:23:33]

The CQ bit was checked by bmeurer@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-10-22 09:23:42]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1407913003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1407913003/1

[commit-bot: I haz the power, 2015-10-22 09:24:45]

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

[commit-bot: I haz the power, 2015-10-22 09:24:46]

Dry run: Try jobs failed on following builders:
  v8_presubmit on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_presubmit/builds/6927)
  v8_win_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_win_rel/builds/10922)

[Jarin, 2015-10-22 09:29:28]

lgtm. nice!

[Benedikt Meurer, 2015-10-22 09:44:31]

The CQ bit was checked by bmeurer@chromium.org

[Benedikt Meurer, 2015-10-22 09:44:31]

The patchset sent to the CQ was uploaded after l-g-t-m from jarin@chromium.org
Link to the patchset: https://codereview.chromium.org/1407913003/#ps20001
(title: "REBASE")

[Benedikt Meurer, 2015-10-22 09:54:52]

The CQ bit was unchecked by bmeurer@chromium.org

[Benedikt Meurer, 2015-10-22 09:54:57]

The CQ bit was checked by bmeurer@chromium.org

[Benedikt Meurer, 2015-10-22 09:55:07]

The CQ bit was unchecked by bmeurer@chromium.org

[Benedikt Meurer, 2015-10-22 09:55:20]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2015-10-22 10:23:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1407913003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1407913003/20001

[Benedikt Meurer, 2015-10-22 10:24:33]

Committed patchset #2 (id:20001) manually as
71bde166b191f6a459827d9be11424405ba13414 (presubmit successful).

[commit-bot: I haz the power, 2015-10-22 10:24:34]

Patchset 2 (id:??) landed as
https://crrev.com/71bde166b191f6a459827d9be11424405ba13414
Cr-Commit-Position: refs/heads/master@{#31462}