Adding Mac test renderer, some test refactoring and made cpplint pass.

BUG=1667
TEST=Rendered video in Mac loopback test.
R=pbos@webrtc.org, xians@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/1554004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@4112 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/video_engine/test/common/vcm_capturer.h b/video_engine/test/common/vcm_capturer.h
index 2447de5..83cf19d 100644
--- a/video_engine/test/common/vcm_capturer.h
+++ b/video_engine/test/common/vcm_capturer.h
@@ -27,8 +27,8 @@
   virtual void Start() OVERRIDE;
   virtual void Stop() OVERRIDE;
 
-  virtual void OnIncomingCapturedFrame(const int32_t id, I420VideoFrame& frame)
-      OVERRIDE;
+  virtual void OnIncomingCapturedFrame(
+      const int32_t id, I420VideoFrame& frame) OVERRIDE;  // NOLINT
   virtual void OnIncomingCapturedEncodedFrame(const int32_t id,
                                               VideoFrame& frame,
                                               VideoCodecType codec_type)