Hard-code tap resolve and prefetch limits.

Hard-code tap resolve and prefetch limits.

- TAP_RESOLVE_LIMIT_FOR_DECIDED and TAP_PREFETCH_LIMIT_FOR_DECIDED are always
  set to 50 via finch.
- TAP_RESOLVE_LIMIT_FOR_UNDECIDED and TAP_PREFETCH_LIMIT_FOR_UNDECIDED
  are always set to 20 via finch.

This CL hard-codes these values and allows for tests to overrride it.

BUG=527621
Committed: https://crrev.com/b9eb2c66e29459a5ba5ade86181d40ec0fa3977f
Cr-Commit-Position: refs/heads/master@{#358723}

[aurimas (slooooooooow), 2015-11-09 22:41:33]

aurimas@chromium.org changed reviewers:
+ twellington@chromium.org

[aurimas (slooooooooow), 2015-11-09 22:41:33]

PTAL

[Theresa, 2015-11-09 22:46:50]

lgtm

[aurimas (slooooooooow), 2015-11-09 23:03:35]

The CQ bit was checked by aurimas@chromium.org

[aurimas (slooooooooow), 2015-11-09 23:03:35]

The patchset sent to the CQ was uploaded after l-g-t-m from
twellington@chromium.org
Link to the patchset: https://chromiumcodereview.appspot.com/1423723006/#ps20001
(title: "Rebase")

[commit-bot: I haz the power, 2015-11-09 23:06:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1423723006/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1423723006/20001

[aurimas (slooooooooow), 2015-11-09 23:40:40]

The CQ bit was checked by aurimas@chromium.org

[aurimas (slooooooooow), 2015-11-09 23:40:40]

The patchset sent to the CQ was uploaded after l-g-t-m from
twellington@chromium.org
Link to the patchset: https://chromiumcodereview.appspot.com/1423723006/#ps40001
(title: "Add @VisibleForTesting annotation")

[commit-bot: I haz the power, 2015-11-09 23:41:57]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1423723006/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1423723006/40001

[commit-bot: I haz the power, 2015-11-10 00:57:56]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-11-10 00:58:41]

Patchset 3 (id:??) landed as
https://crrev.com/b9eb2c66e29459a5ba5ade86181d40ec0fa3977f
Cr-Commit-Position: refs/heads/master@{#358723}