Initialize CachingBuildEngine variables in one constructor only
Initialize CachingBuildEngine variables in one constructor only

Summary: Reducing complexity by piping one constructor through another.

Test Plan: CI

Reviewed By: ttsugriy

fbshipit-source-id: 9c2b0a7

romanoid/buck,clonetwin26/buck,ilya-klyuchnikov/buck,romanoid/buck,LegNeato/buck,SeleniumHQ/buck,ilya-klyuchnikov/buck,Addepar/buck,romanoid/buck,shs96c/buck,clonetwin26/buck,LegNeato/buck,JoelMarcey/buck,JoelMarcey/buck,kageiit/buck,facebook/buck,shs96c/buck,shs96c/buck,shs96c/buck,ilya-klyuchnikov/buck,shs96c/buck,Addepar/buck,zpao/buck,Addepar/buck,LegNeato/buck,romanoid/buck,ilya-klyuchnikov/buck,romanoid/buck,LegNeato/buck,SeleniumHQ/buck,SeleniumHQ/buck,LegNeato/buck,romanoid/buck,clonetwin26/buck,JoelMarcey/buck,JoelMarcey/buck,rmaz/buck,ilya-klyuchnikov/buck,rmaz/buck,JoelMarcey/buck,brettwooldridge/buck,LegNeato/buck,LegNeato/buck,SeleniumHQ/buck,shs96c/buck,romanoid/buck,ilya-klyuchnikov/buck,Addepar/buck,shs96c/buck,zpao/buck,brettwooldridge/buck,LegNeato/buck,clonetwin26/buck,ilya-klyuchnikov/buck,SeleniumHQ/buck,kageiit/buck,clonetwin26/buck,facebook/buck,SeleniumHQ/buck,Addepar/buck,clonetwin26/buck,shs96c/buck,nguyentruongtho/buck,romanoid/buck,shs96c/buck,rmaz/buck,romanoid/buck,clonetwin26/buck,rmaz/buck,romanoid/buck,zpao/buck,brettwooldridge/buck,nguyentruongtho/buck,kageiit/buck,shs96c/buck,rmaz/buck,nguyentruongtho/buck,SeleniumHQ/buck,nguyentruongtho/buck,Addepar/buck,brettwooldridge/buck,SeleniumHQ/buck,facebook/buck,brettwooldridge/buck,facebook/buck,rmaz/buck,brettwooldridge/buck,brettwooldridge/buck,rmaz/buck,romanoid/buck,Addepar/buck,nguyentruongtho/buck,JoelMarcey/buck,LegNeato/buck,SeleniumHQ/buck,nguyentruongtho/buck,rmaz/buck,brettwooldridge/buck,kageiit/buck,JoelMarcey/buck,clonetwin26/buck,shs96c/buck,JoelMarcey/buck,rmaz/buck,clonetwin26/buck,brettwooldridge/buck,facebook/buck,clonetwin26/buck,JoelMarcey/buck,Addepar/buck,ilya-klyuchnikov/buck,zpao/buck,SeleniumHQ/buck,LegNeato/buck,JoelMarcey/buck,Addepar/buck,SeleniumHQ/buck,ilya-klyuchnikov/buck,brettwooldridge/buck,rmaz/buck,LegNeato/buck,kageiit/buck,kageiit/buck,JoelMarcey/buck,brettwooldridge/buck,romanoid/buck,clonetwin26/buck,facebook/buck,rmaz/buck,JoelMarcey/buck,shs96c/buck,clonetwin26/buck,facebook/buck,LegNeato/buck,clonetwin26/buck,ilya-klyuchnikov/buck,ilya-klyuchnikov/buck,ilya-klyuchnikov/buck,Addepar/buck,rmaz/buck,zpao/buck,ilya-klyuchnikov/buck,zpao/buck,nguyentruongtho/buck,SeleniumHQ/buck,Addepar/buck,kageiit/buck,Addepar/buck,romanoid/buck,SeleniumHQ/buck,brettwooldridge/buck,Addepar/buck,brettwooldridge/buck,zpao/buck,shs96c/buck,LegNeato/buck,JoelMarcey/buck,rmaz/buck