Revert of Store the callstack of the IPC sender of ViewMsg_New

Revert of https://codereview.chromium.org/1006003005/ and https://codereview.chromium.org/1001153002/.

We've already collected enough data to triage this bug.

BUG=464633
Committed: https://crrev.com/8302db82f110b08d3948bde4dd8f119e693d19a1
Cr-Commit-Position: refs/heads/master@{#321394}

[lfg, 2015-03-19 16:43:11]

lfg@chromium.org changed reviewers:
+ nasko@chromium.org

[lfg, 2015-03-19 16:43:24]

Please, take a look.

[nasko, 2015-03-19 17:46:04]

LGTM

[lfg, 2015-03-19 17:48:18]

The CQ bit was checked by lfg@chromium.org

[commit-bot: I haz the power, 2015-03-19 17:48:46]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1016183002/1

[commit-bot: I haz the power, 2015-03-19 18:33:04]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-19 18:33:59]

Patchset 1 (id:??) landed as
https://crrev.com/8302db82f110b08d3948bde4dd8f119e693d19a1
Cr-Commit-Position: refs/heads/master@{#321394}