fixed cpplint issue with vp9_scale.h
fixed cpplint issue with vp9_scale.h

Change-Id: Ia7969baac7ffc6d7a0e8e8e83e9252d077a3c5b3

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