Reland Remove NativeTabbedPane[Win|Wrapper]; promote Views impl.

Reland Remove NativeTabbedPane[Win|Wrapper]; promote Views impl.

Original CL (reverted for leaks): https://codereview.chromium.org/12225042/
http://build.chromium.org/p/chromium.memory.fyi/builders/Chromium%20OS%20Heapcheck/builds/14990
http://build.chromium.org/p/chromium.memory.fyi/builders/Chromium%20OS%20%28valgrind%29%283%29/builds/22339
Leaks are fixed here by having the tabbed pane own its tab content Views.
(all Valgrind and Heapcheck leaks observed locally are fixed by this change)

TBR=sky@chromium.org

The original CL description is copied below:
========================================
Remove NativeTabbedPane[Win|Wrapper]; promote Views impl.

Remove NativeTabbedPaneWin and NativeTabbedPaneWrapper.
( its last use was eliminated in http://crrev.com/180924 )
Write a TabbedPane based on NativeTabbedPaneViews.
Update unit tests; cleanup; etc.

BUG=138059
TEST=No observable tabbed pane appearance/behavior changes (see the WebsiteSettingsPopupView and CollectedCookiesView); unit tests.
R=markusheintz@chromium.org,sky@chromium.org,ben@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=181945

[msw, 2013-02-12 06:56:48]

I'll land this unless there is any additional feedback/comments; thanks!

[commit-bot: I haz the power, 2013-02-12 16:15:29]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/msw@chromium.org/12211122/3002

[commit-bot: I haz the power, 2013-02-12 17:38:53]

Change committed as 181945