Attempt to fix bad dependency in Sky build
Attempt to fix bad dependency in Sky build

Several people have run into trouble building Sky because of a missing
dependency in the build. From inspection, it looks like this might fix the
issue, but it's hard to be sure without being able to reproduce the issue
locally.

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/1130353013

abarth/sky_engine,mikejurka/engine,TribeMedia/sky_engine,devoncarew/sky_engine,qiankunshe/sky_engine,jamesr/flutter_engine,mdakin/engine,aam/engine,jamesr/sky_engine,chinmaygarde/sky_engine,tvolkert/engine,devoncarew/engine,zhangxq5012/sky_engine,zhangxq5012/sky_engine,devoncarew/sky_engine,Hixie/sky_engine,TribeMedia/sky_engine,jamesr/flutter_engine,Hixie/sky_engine,xunmengfeng/engine,mpcomplete/engine,chinmaygarde/sky_engine,jamesr/sky_engine,cdotstout/sky_engine,abarth/sky_engine,axinging/sky_engine,tvolkert/engine,axinging/sky_engine,devoncarew/engine,krisgiesing/sky_engine,devoncarew/engine,aam/engine,iansf/sky_engine,mxia/engine,rmacnak-google/engine,lyceel/engine,takaaptech/sky_engine,chinmaygarde/sky_engine,TribeMedia/sky_engine,chinmaygarde/sky_engine,TribeMedia/sky_engine,rmacnak-google/engine,lyceel/engine,axinging/sky_engine,zhangxq5012/sky_engine,jimsimon/sky_engine,mxia/engine,aam/engine,mpcomplete/flutter_engine,krisgiesing/sky_engine,zhangxq5012/sky_engine,iansf/sky_engine,Hixie/sky_engine,devoncarew/engine,qiankunshe/sky_engine,jamesr/sky_engine,TribeMedia/sky_engine,chinmaygarde/flutter_engine,lyceel/engine,lyceel/engine,mxia/engine,cdotstout/sky_engine,takaaptech/sky_engine,takaaptech/sky_engine,xunmengfeng/engine,mpcomplete/engine,jason-simmons/flutter_engine,jimsimon/sky_engine,iansf/sky_engine,devoncarew/sky_engine,tvolkert/engine,abarth/sky_engine,xunmengfeng/engine,xunmengfeng/engine,mdakin/engine,jason-simmons/sky_engine,jamesr/flutter_engine,zhangxq5012/sky_engine,jason-simmons/flutter_engine,takaaptech/sky_engine,chinmaygarde/sky_engine,TribeMedia/sky_engine,Hixie/sky_engine,jason-simmons/flutter_engine,axinging/sky_engine,jamesr/flutter_engine,jason-simmons/flutter_engine,chinmaygarde/flutter_engine,tvolkert/engine,chinmaygarde/sky_engine,afandria/sky_engine,Hixie/sky_engine,chinmaygarde/sky_engine,jason-simmons/sky_engine,Hixie/sky_engine,takaaptech/sky_engine,takaaptech/sky_engine,jimsimon/sky_engine,rmacnak-google/engine,mxia/engine,mikejurka/engine,qiankunshe/sky_engine,iansf/sky_engine,tvolkert/engine,flutter/engine,Hixie/sky_engine,chinmaygarde/flutter_engine,abarth/sky_engine,qiankunshe/sky_engine,flutter/engine,mpcomplete/flutter_engine,jimsimon/sky_engine,flutter/engine,mdakin/engine,jamesr/sky_engine,abarth/sky_engine,cdotstout/sky_engine,mdakin/engine,mpcomplete/flutter_engine,flutter/engine,devoncarew/engine,axinging/sky_engine,mpcomplete/engine,jamesr/sky_engine,tvolkert/engine,flutter/engine,qiankunshe/sky_engine,devoncarew/sky_engine,mpcomplete/engine,chinmaygarde/flutter_engine,cdotstout/sky_engine,jimsimon/sky_engine,mdakin/engine,jimsimon/sky_engine,afandria/sky_engine,jason-simmons/sky_engine,mpcomplete/engine,jason-simmons/flutter_engine,jason-simmons/sky_engine,Hixie/sky_engine,jason-simmons/flutter_engine,zhangxq5012/sky_engine,krisgiesing/sky_engine,devoncarew/sky_engine,rmacnak-google/engine,afandria/sky_engine,mikejurka/engine,jason-simmons/sky_engine,jimsimon/sky_engine,TribeMedia/sky_engine,mikejurka/engine,aam/engine,jason-simmons/flutter_engine,mpcomplete/flutter_engine,mxia/engine,devoncarew/sky_engine,lyceel/engine,iansf/sky_engine,axinging/sky_engine,mpcomplete/engine,mxia/engine,abarth/sky_engine,jason-simmons/flutter_engine,chinmaygarde/flutter_engine,devoncarew/sky_engine,jamesr/flutter_engine,rmacnak-google/engine,krisgiesing/sky_engine,lyceel/engine,jamesr/sky_engine,mdakin/engine,mdakin/engine,cdotstout/sky_engine,flutter/engine,TribeMedia/sky_engine,afandria/sky_engine,takaaptech/sky_engine,aam/engine,axinging/sky_engine,qiankunshe/sky_engine,rmacnak-google/engine,devoncarew/engine,krisgiesing/sky_engine,aam/engine,aam/engine,lyceel/engine,abarth/sky_engine,afandria/sky_engine,mikejurka/engine,tvolkert/engine,afandria/sky_engine,mpcomplete/flutter_engine,takaaptech/sky_engine,cdotstout/sky_engine,krisgiesing/sky_engine,axinging/sky_engine,mikejurka/engine,xunmengfeng/engine,devoncarew/engine,jamesr/flutter_engine,jamesr/flutter_engine,mdakin/engine,TribeMedia/sky_engine,zhangxq5012/sky_engine,qiankunshe/sky_engine,rmacnak-google/engine,flutter/engine,jamesr/flutter_engine,qiankunshe/sky_engine,cdotstout/sky_engine,jimsimon/sky_engine,chinmaygarde/flutter_engine,mikejurka/engine,jason-simmons/sky_engine,flutter/engine,mxia/engine,jamesr/flutter_engine,axinging/sky_engine,afandria/sky_engine,afandria/sky_engine,mxia/engine,iansf/sky_engine,mpcomplete/engine,aam/engine,mpcomplete/engine,iansf/sky_engine,jamesr/sky_engine,iansf/sky_engine,mpcomplete/flutter_engine,zhangxq5012/sky_engine,xunmengfeng/engine,jason-simmons/sky_engine,mikejurka/engine,krisgiesing/sky_engine,mikejurka/engine,chinmaygarde/flutter_engine,xunmengfeng/engine,zhangxq5012/sky_engine,takaaptech/sky_engine,jimsimon/sky_engine