Remove JSFunctionResultCache.

Remove JSFunctionResultCache.

There is only one use case for it: String.prototype.search converts a
string argument into a RegExp. The cache is used to avoid repeating that
conversion. However, this does not make the added complexity worthwhile.

Committed: https://crrev.com/4a2e4420b8af50ca066905d99e7d7938c9105258
Cr-Commit-Position: refs/heads/master@{#29985}

[Yang, 2015-08-03 08:39:24]

yangguo@chromium.org changed reviewers:
+ mstarzinger@chromium.org

[Michael Starzinger, 2015-08-03 10:29:41]

LGTM if the performance impact is negligible. If this ends up regressing
something heavily, then we might need to revert.

[Yang, 2015-08-03 10:34:37]

The CQ bit was checked by yangguo@chromium.org

[commit-bot: I haz the power, 2015-08-03 10:34:47]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1267493006/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1267493006/1

[commit-bot: I haz the power, 2015-08-03 10:45:23]

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

[commit-bot: I haz the power, 2015-08-03 10:45:23]

Try jobs failed on following builders:
  v8_mac_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_mac_rel/builds/8325)

[Yang, 2015-08-03 12:56:12]

The CQ bit was checked by yangguo@chromium.org

[Yang, 2015-08-03 12:56:13]

The patchset sent to the CQ was uploaded after l-g-t-m from
mstarzinger@chromium.org
Link to the patchset: https://codereview.chromium.org/1267493006/#ps20001
(title: "fixed tests")

[commit-bot: I haz the power, 2015-08-03 12:56:15]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1267493006/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1267493006/20001

[commit-bot: I haz the power, 2015-08-03 13:06:12]

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

[commit-bot: I haz the power, 2015-08-03 13:06:13]

Try jobs failed on following builders:
  v8_linux64_avx2_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_avx2_rel/builds/...)

[Yang, 2015-08-03 13:51:53]

The CQ bit was checked by yangguo@chromium.org

[Yang, 2015-08-03 13:51:53]

The patchset sent to the CQ was uploaded after l-g-t-m from
mstarzinger@chromium.org
Link to the patchset: https://codereview.chromium.org/1267493006/#ps40001
(title: "fix more")

[commit-bot: I haz the power, 2015-08-03 13:52:10]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1267493006/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1267493006/40001

[commit-bot: I haz the power, 2015-08-03 13:53:08]

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

[commit-bot: I haz the power, 2015-08-03 13:53:09]

Try jobs failed on following builders:
  v8_linux_arm_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_arm_rel/builds/6687)
  v8_linux_mips64el_compile_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_mips64el_compile_r...)

[Yang, 2015-08-03 14:03:08]

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

[commit-bot: I haz the power, 2015-08-03 14:03:26]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1267493006/60001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1267493006/60001

[commit-bot: I haz the power, 2015-08-03 14:06:50]

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

[commit-bot: I haz the power, 2015-08-03 14:06:51]

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/4642)

[Yang, 2015-08-03 18:11:51]

The CQ bit was checked by yangguo@chromium.org

[Yang, 2015-08-03 18:11:51]

The patchset sent to the CQ was uploaded after l-g-t-m from
mstarzinger@chromium.org
Link to the patchset: https://codereview.chromium.org/1267493006/#ps60001
(title: "rebase")

[commit-bot: I haz the power, 2015-08-03 18:12:01]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1267493006/60001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1267493006/60001

[commit-bot: I haz the power, 2015-08-03 18:14:02]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2015-08-03 18:14:28]

Patchset 4 (id:??) landed as
https://crrev.com/4a2e4420b8af50ca066905d99e7d7938c9105258
Cr-Commit-Position: refs/heads/master@{#29985}