Clean up - VideoRendererInterface should not have SetSize anymore.

With the introduction of CVO, VideoRendererInterface implementation should handle rotation frame by either rotating in renderer or calling into GetCopyWithRotationApplied.

BUG=webrtc:4145
Committed: https://crrev.com/2537f5aac078f40df15635866b9526174a3bdfa7
Cr-Commit-Position: refs/heads/master@{#321871}

[guoweis_left_chromium, 2015-03-20 18:35:35]

guoweis@chromium.org changed reviewers:
+ perkj@chromium.org

[guoweis_left_chromium, 2015-03-20 18:36:20]

PTAL.

[perkj_chrome, 2015-03-23 06:55:16]

please add a valid bug number to cvo.

webrtc::xxxx might work, if not, create a bug in Chrome and refer to the webrtc
issue.

lgtm with that addressed.

[guoweis_left_chromium, 2015-03-23 20:22:33]

The CQ bit was checked by guoweis@chromium.org

[commit-bot: I haz the power, 2015-03-23 20:23:09]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1025653004/20001

[commit-bot: I haz the power, 2015-03-23 22:21:39]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-03-23 22:22:33]

Patchset 2 (id:??) landed as
https://crrev.com/2537f5aac078f40df15635866b9526174a3bdfa7
Cr-Commit-Position: refs/heads/master@{#321871}