Unfriend views::internal::RootView from views::ViewTargeter

Unfriend views::internal::RootView from views::ViewTargeter

No longer necessary, so unfriend and delete the
associated TODO.

BUG=none
TEST=none

Committed: https://crrev.com/965db6c64a158fd5c544e459c225f45576f11a39
Cr-Commit-Position: refs/heads/master@{#307957}

[tdanderson, 2014-12-11 18:13:22]

tdanderson@chromium.org changed reviewers:
+ sadrul@chromium.org

[tdanderson, 2014-12-11 18:13:23]

Sadrul, PTAL.

[sadrul, 2014-12-11 18:47:53]

lgtm

[tdanderson, 2014-12-11 18:59:08]

The CQ bit was checked by tdanderson@chromium.org

[commit-bot: I haz the power, 2014-12-11 18:59:57]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/796923002/1

[commit-bot: I haz the power, 2014-12-11 19:59:58]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-12-11 20:01:55]

Patchset 1 (id:??) landed as
https://crrev.com/965db6c64a158fd5c544e459c225f45576f11a39
Cr-Commit-Position: refs/heads/master@{#307957}