media/win: Make TypeEnumerator FINAL.

media/win: Make TypeEnumerator FINAL.

Fixes this warning:

In file included from ..\..\media/video/capture/win/pin_base_win.h:15:
..\..\base/memory/ref_counted.h(131,7) :  warning(clang): delete called on 'const media::TypeEnumerator' that has virtual functions but non-virtual destructor [-Wdelete-non-virtual-dtor]
      delete static_cast<const T*>(this);
      ^
..\..\media\video\capture\win\pin_base_win.cc(40,39) :  note(clang): in instantiation of member function 'base::RefCounted<media::TypeEnumerator>::Release' requested here
    base::RefCounted<TypeEnumerator>::Release();
                                      ^
1 warning generated.

BUG=82385
NOTRY=true

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=284982

[Nico, 2014-07-23 01:15:30]

(all media/video/capture/OWNERS are currently away :-/)

[scherkus (not reviewing), 2014-07-23 01:17:12]

lgtm

[Nico, 2014-07-23 04:45:35]

The CQ bit was checked by thakis@chromium.org

[commit-bot: I haz the power, 2014-07-23 04:48:17]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/thakis@chromium.org/410833002/1

[commit-bot: I haz the power, 2014-07-23 06:25:12]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  android_chromium_gn_compile_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_chromium_gn_c...)
  win_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/win_chromium_rel/buil...)

[commit-bot: I haz the power, 2014-07-23 06:40:42]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-07-23 06:40:44]

Try jobs failed on following builders:
  win_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/win_chromium_rel/buil...)

[Nico, 2014-07-23 17:37:21]

The CQ bit was checked by thakis@chromium.org

[commit-bot: I haz the power, 2014-07-23 17:38:33]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/thakis@chromium.org/410833002/1

[commit-bot: I haz the power, 2014-07-23 17:46:36]

Change committed as 284982