[Telemetry] Move record_wpr from telemetry/page to telemetry/

[Telemetry] Move record_wpr from telemetry/page to telemetry/

Since recording should work for all user_story, not just page.
And the logic of record_wpr should be very similar to
telemetry/benchmark_runner.py, we would want them to be a
sibling in the directory hierarchy.

BUG=470865
Committed: https://crrev.com/9afb144d4b1f0137b8cbd2055b45c406399885ba
Cr-Commit-Position: refs/heads/master@{#330123}

[nednguyen, 2015-05-15 16:07:24]

Patchset #1 (id:1) has been deleted

[nednguyen, 2015-05-15 16:09:41]

nednguyen@google.com changed reviewers:
+ sullivan@chromium.org

[sullivan, 2015-05-15 16:25:53]

lgtm

[nednguyen, 2015-05-15 16:40:48]

The CQ bit was checked by nednguyen@google.com

[commit-bot: I haz the power, 2015-05-15 16:41:41]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1140243002/20001

[commit-bot: I haz the power, 2015-05-15 17:38:04]

Committed patchset #1 (id:20001)

[commit-bot: I haz the power, 2015-05-15 17:38:48]

Patchset 1 (id:??) landed as
https://crrev.com/9afb144d4b1f0137b8cbd2055b45c406399885ba
Cr-Commit-Position: refs/heads/master@{#330123}