Change scoped_ptr<FrameTreeNode> to FrameTreeNode*

Change scoped_ptr<FrameTreeNode> to FrameTreeNode*

This fixes an issue with ~FrameTree() which would be problematic if
scoped_ptr were made to have the null-before-delete semantics of
libc++'s unique_ptr.

BUG=535321
Committed: https://crrev.com/70b782d89203d62d8b4e7937615579a3fc04583b
Cr-Commit-Position: refs/heads/master@{#352630}

[ncarter (slow), 2015-10-05 16:59:31]

nick@chromium.org changed reviewers:
+ amistry@chromium.org

[ncarter (slow), 2015-10-05 16:59:31]

amistry, ptal

[nasko, 2015-10-05 17:19:30]

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

[nasko, 2015-10-05 17:19:31]

Drive-by nit.

https://codereview.chromium.org/1380253004/diff/1/content/browser/frame_host/...
File content/browser/frame_host/frame_tree.h (right):

https://codereview.chromium.org/1380253004/diff/1/content/browser/frame_host/...
content/browser/frame_host/frame_tree.h:183: // This is an owned ptr to the root
frame tree node, which never changes over
nit: s/frame tree node/FrameTreeNode/

[ncarter (slow), 2015-10-05 17:23:22]

https://codereview.chromium.org/1380253004/diff/1/content/browser/frame_host/...
File content/browser/frame_host/frame_tree.h (right):

https://codereview.chromium.org/1380253004/diff/1/content/browser/frame_host/...
content/browser/frame_host/frame_tree.h:183: // This is an owned ptr to the root
frame tree node, which never changes over
On 2015/10/05 17:19:30, nasko (slow to review) wrote:
> nit: s/frame tree node/FrameTreeNode/

Done.

[Anand Mistry (off Chromium), 2015-10-06 04:30:54]

LGTM

Thanks.

[ncarter (slow), 2015-10-06 16:35:15]

The CQ bit was checked by nick@chromium.org

[commit-bot: I haz the power, 2015-10-06 16:36:27]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1380253004/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1380253004/20001

[commit-bot: I haz the power, 2015-10-06 17:37:18]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-10-06 17:38:42]

Patchset 2 (id:??) landed as
https://crrev.com/70b782d89203d62d8b4e7937615579a3fc04583b
Cr-Commit-Position: refs/heads/master@{#352630}