Adding vpx_image_scale() function in vpxdec.
Adding vpx_image_scale() function in vpxdec.

Change-Id: I29eaffff5089b26e8778a977c3b3da11800f1c49

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