Remove Clone() from CannedBrowsingData*Helper classes

Remove Clone() from CannedBrowsingData*Helper classes

The Clone() method was added in https://codereview.chromium.org/6670033, but is no longer called anywhere. This CL removes that dead code.

BUG=384873
Committed: https://crrev.com/e15af4283ff44218f2b1a351cc07395c6807de10
Cr-Commit-Position: refs/heads/master@{#294834}

[vabr (Chromium), 2014-09-05 15:39:37]

vabr@chromium.org changed reviewers:
+ jochen@chromium.org

[vabr (Chromium), 2014-09-05 15:39:37]

Hi Jochen,

As the original author of Clone(), please review this CL.

Thanks!
Vaclav

[jochen (gone - plz use gerrit), 2014-09-08 12:15:40]

lgtm

[vabr (Chromium), 2014-09-15 15:04:04]

The CQ bit was checked by vabr@chromium.org

[commit-bot: I haz the power, 2014-09-15 15:04:27]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/546663003/1

[commit-bot: I haz the power, 2014-09-15 16:19:14]

Committed patchset #1 (id:1) as 2a101c2083eaf701c1da9082ebd5645c125e02d1

[commit-bot: I haz the power, 2014-09-15 16:21:50]

Patchset 1 (id:??) landed as
https://crrev.com/e15af4283ff44218f2b1a351cc07395c6807de10
Cr-Commit-Position: refs/heads/master@{#294834}