Remove unused methods from QuotaPolicyChannelIDStoreTest

Remove unused methods from QuotaPolicyChannelIDStoreTest

BUG=

Committed: https://crrev.com/2117e7503ed5ee06a9e80e6e02b01786b73ed3b1
Cr-Commit-Position: refs/heads/master@{#329160}

[nharper, 2015-05-08 03:59:41]

nharper@chromium.org changed reviewers:
+ mattm@chromium.org, rsleevi@chromium.org

[nharper, 2015-05-08 03:59:42]

This dead code referenced a file that I'm changing in
https://codereview.chromium.org/1076063002/, so I figure I'd remove the dead
code.

[mattm, 2015-05-08 22:36:56]

lgtm

[nharper, 2015-05-08 22:41:12]

The CQ bit was checked by nharper@chromium.org

[commit-bot: I haz the power, 2015-05-08 22:46:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1134613003/1

[commit-bot: I haz the power, 2015-05-09 03:04:01]

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

[commit-bot: I haz the power, 2015-05-09 03:04:02]

Try jobs failed on following builders:
  android_chromium_gn_compile_dbg on tryserver.chromium.linux (JOB_TIMED_OUT, no
build URL)
  android_chromium_gn_compile_rel on tryserver.chromium.linux (JOB_TIMED_OUT, no
build URL)
  cast_shell_android on tryserver.chromium.linux (JOB_TIMED_OUT, no build URL)
  cast_shell_linux on tryserver.chromium.linux (JOB_TIMED_OUT, no build URL)
  chromium_presubmit on tryserver.chromium.linux (JOB_TIMED_OUT, no build URL)
  linux_chromium_asan_rel_ng on tryserver.chromium.linux (JOB_TIMED_OUT, no
build URL)
  linux_chromium_chromeos_compile_dbg_ng on tryserver.chromium.linux
(JOB_TIMED_OUT, no build URL)
  linux_chromium_chromeos_ozone_rel_ng on tryserver.chromium.linux
(JOB_TIMED_OUT, no build URL)
  linux_chromium_chromeos_rel_ng on tryserver.chromium.linux (JOB_TIMED_OUT, no
build URL)
  linux_chromium_clobber_rel_ng on tryserver.chromium.linux (JOB_TIMED_OUT, no
build URL)
  linux_chromium_gn_chromeos_rel on tryserver.chromium.linux (JOB_TIMED_OUT, no
build URL)
  linux_chromium_gn_dbg on tryserver.chromium.linux (JOB_TIMED_OUT, no build
URL)
  linux_chromium_gn_rel on tryserver.chromium.linux (JOB_TIMED_OUT, no build
URL)
  linux_chromium_rel_ng on tryserver.chromium.linux (JOB_TIMED_OUT, no build
URL)
  mac_chromium_compile_dbg_ng on tryserver.chromium.mac (JOB_TIMED_OUT, no build
URL)
  mac_chromium_rel_ng on tryserver.chromium.mac (JOB_TIMED_OUT, no build URL)

[nharper, 2015-05-11 16:14:08]

The CQ bit was checked by nharper@chromium.org

[commit-bot: I haz the power, 2015-05-11 16:14:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1134613003/1

[commit-bot: I haz the power, 2015-05-11 16:56:44]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-11 16:57:35]

Patchset 1 (id:??) landed as
https://crrev.com/2117e7503ed5ee06a9e80e6e02b01786b73ed3b1
Cr-Commit-Position: refs/heads/master@{#329160}