Add tests for simple_encoder.
Add tests for simple_encoder.

Change-Id: Ia8d1ddc856aa3d350522dd8dd13abc0bf40612ee

reimaginemedia/webm.libvpx,shareefalis/libvpx,Laknot/libvpx,WebRTC-Labs/libvpx,Laknot/libvpx,kleopatra999/webm.libvpx,felipebetancur/libvpx,Laknot/libvpx,shacklettbp/aom,jmvalin/aom,Maria1099/webm.libvpx,jdm/libvpx,kim42083/webm.libvpx,hsueceumd/test_hui,openpeer/libvpx_new,thdav/aom,gshORTON/webm.libvpx,reimaginemedia/webm.libvpx,kim42083/webm.libvpx,ittiamvpx/libvpx,gshORTON/webm.libvpx,mbebenita/aom,GrokImageCompression/aom,felipebetancur/libvpx,Suvarna1488/webm.libvpx,ShiftMediaProject/libvpx,n4t/libvpx,reimaginemedia/webm.libvpx,lyx2014/libvpx_c,VTCSecureLLC/libvpx,shyamalschandra/libvpx,charup/https---github.com-webmproject-libvpx-,Topopiccione/libvpx,mbebenita/aom,charup/https---github.com-webmproject-libvpx-,Acidburn0zzz/webm.libvpx,jmvalin/aom,ShiftMediaProject/libvpx,ittiamvpx/libvpx,mwgoldsmith/vpx,webmproject/libvpx,reimaginemedia/webm.libvpx,abwiz0086/webm.libvpx,WebRTC-Labs/libvpx,altogother/webm.libvpx,Acidburn0zzz/webm.libvpx,iniwf/webm.libvpx,felipebetancur/libvpx,GrokImageCompression/aom,Distrotech/libvpx,smarter/aom,GrokImageCompression/aom,Distrotech/libvpx,thdav/aom,abwiz0086/webm.libvpx,felipebetancur/libvpx,altogother/webm.libvpx,pcwalton/libvpx,iniwf/webm.libvpx,openpeer/libvpx_new,kalli123/webm.libvpx,liqianggao/libvpx,matanbs/vp982,WebRTC-Labs/libvpx,stewnorriss/libvpx,shyamalschandra/libvpx,kalli123/webm.libvpx,openpeer/libvpx_new,gshORTON/webm.libvpx,thdav/aom,Laknot/libvpx,iniwf/webm.libvpx,kim42083/webm.libvpx,shacklettbp/aom,altogother/webm.libvpx,goodleixiao/vpx,smarter/aom,abwiz0086/webm.libvpx,thdav/aom,Topopiccione/libvpx,stewnorriss/libvpx,ittiamvpx/libvpx-1,hsueceumd/test_hui,openpeer/libvpx_new,shareefalis/libvpx,jacklicn/webm.libvpx,Laknot/libvpx,mbebenita/aom,Suvarna1488/webm.libvpx,VTCSecureLLC/libvpx,matanbs/webm.libvpx,pcwalton/libvpx,stewnorriss/libvpx,kleopatra999/webm.libvpx,goodleixiao/vpx,mbebenita/aom,Distrotech/libvpx,hsueceumd/test_hui,ittiamvpx/libvpx,iniwf/webm.libvpx,Acidburn0zzz/webm.libvpx,running770/libvpx,shareefalis/libvpx,GrokImageCompression/aom,matanbs/vp982,ShiftMediaProject/libvpx,jacklicn/webm.libvpx,mwgoldsmith/libvpx,gshORTON/webm.libvpx,luctrudeau/aom,ittiamvpx/libvpx-1,zofuthan/libvpx,Suvarna1488/webm.libvpx,hsueceumd/test_hui,n4t/libvpx,pcwalton/libvpx,running770/libvpx,jdm/libvpx,stewnorriss/libvpx,hsueceumd/test_hui,mwgoldsmith/libvpx,ittiamvpx/libvpx-1,matanbs/vp982,jdm/libvpx,running770/libvpx,goodleixiao/vpx,shyamalschandra/libvpx,GrokImageCompression/aom,Maria1099/webm.libvpx,liqianggao/libvpx,kim42083/webm.libvpx,iniwf/webm.libvpx,shacklettbp/aom,shareefalis/libvpx,zofuthan/libvpx,openpeer/libvpx_new,kim42083/webm.libvpx,n4t/libvpx,jacklicn/webm.libvpx,gshORTON/webm.libvpx,goodleixiao/vpx,zofuthan/libvpx,matanbs/vp982,Maria1099/webm.libvpx,VTCSecureLLC/libvpx,ittiamvpx/libvpx-1,jdm/libvpx,kleopatra999/webm.libvpx,Laknot/libvpx,ittiamvpx/libvpx-1,matanbs/vp982,smarter/aom,goodleixiao/vpx,mwgoldsmith/libvpx,Suvarna1488/webm.libvpx,pcwalton/libvpx,Topopiccione/libvpx,Maria1099/webm.libvpx,gshORTON/webm.libvpx,iniwf/webm.libvpx,lyx2014/libvpx_c,thdav/aom,ShiftMediaProject/libvpx,zofuthan/libvpx,felipebetancur/libvpx,smarter/aom,luctrudeau/aom,matanbs/webm.libvpx,lyx2014/libvpx_c,mbebenita/aom,felipebetancur/libvpx,mwgoldsmith/libvpx,Acidburn0zzz/webm.libvpx,shareefalis/libvpx,matanbs/webm.libvpx,pcwalton/libvpx,webmproject/libvpx,Distrotech/libvpx,abwiz0086/webm.libvpx,mwgoldsmith/vpx,mwgoldsmith/vpx,charup/https---github.com-webmproject-libvpx-,n4t/libvpx,Topopiccione/libvpx,running770/libvpx,ittiamvpx/libvpx,charup/https---github.com-webmproject-libvpx-,VTCSecureLLC/libvpx,shareefalis/libvpx,mbebenita/aom,luctrudeau/aom,ittiamvpx/libvpx-1,charup/https---github.com-webmproject-libvpx-,webmproject/libvpx,WebRTC-Labs/libvpx,zofuthan/libvpx,abwiz0086/webm.libvpx,kleopatra999/webm.libvpx,webmproject/libvpx,mwgoldsmith/libvpx,Topopiccione/libvpx,Maria1099/webm.libvpx,mwgoldsmith/vpx,mbebenita/aom,smarter/aom,kalli123/webm.libvpx,Distrotech/libvpx,Topopiccione/libvpx,ittiamvpx/libvpx,running770/libvpx,mwgoldsmith/libvpx,reimaginemedia/webm.libvpx,charup/https---github.com-webmproject-libvpx-,VTCSecureLLC/libvpx,liqianggao/libvpx,matanbs/webm.libvpx,jacklicn/webm.libvpx,kleopatra999/webm.libvpx,smarter/aom,pcwalton/libvpx,Suvarna1488/webm.libvpx,altogother/webm.libvpx,shyamalschandra/libvpx,Suvarna1488/webm.libvpx,reimaginemedia/webm.libvpx,lyx2014/libvpx_c,stewnorriss/libvpx,liqianggao/libvpx,matanbs/vp982,lyx2014/libvpx_c,shacklettbp/aom,altogother/webm.libvpx,kleopatra999/webm.libvpx,matanbs/webm.libvpx,hsueceumd/test_hui,abwiz0086/webm.libvpx,zofuthan/libvpx,kalli123/webm.libvpx,jdm/libvpx,kalli123/webm.libvpx,ShiftMediaProject/libvpx,matanbs/webm.libvpx,jmvalin/aom,Maria1099/webm.libvpx,mbebenita/aom,kim42083/webm.libvpx,goodleixiao/vpx,jacklicn/webm.libvpx,luctrudeau/aom,webmproject/libvpx,WebRTC-Labs/libvpx,VTCSecureLLC/libvpx,shyamalschandra/libvpx,jdm/libvpx,mwgoldsmith/vpx,shacklettbp/aom,running770/libvpx,ittiamvpx/libvpx,GrokImageCompression/aom,shyamalschandra/libvpx,mwgoldsmith/vpx,jmvalin/aom,stewnorriss/libvpx,luctrudeau/aom,shacklettbp/aom,thdav/aom,jmvalin/aom,jmvalin/aom,Distrotech/libvpx,jacklicn/webm.libvpx,webmproject/libvpx,lyx2014/libvpx_c,matanbs/vp982,luctrudeau/aom,Acidburn0zzz/webm.libvpx,liqianggao/libvpx,openpeer/libvpx_new,liqianggao/libvpx,altogother/webm.libvpx,mbebenita/aom,Acidburn0zzz/webm.libvpx,kalli123/webm.libvpx,n4t/libvpx