Prevent Skia from trying to use stencil buffers (#4362)
Prevent Skia from trying to use stencil buffers (#4362)

Fixes flutter/flutter#13018

When linear blending was disabled, we started rendering directly to FBO0 again. We can't attach stencil there, and the profile graph code triggers a path that (by default) uses it. This option forces us to use alternate rendering methods.

Note that the graph rendering code is constructing a fairly complex path. It would probably be much faster to render as a simpler series of drawRect calls for each box (which would get batched inside Skia).
Hixie/sky_engine,rmacnak-google/engine,rmacnak-google/engine,aam/engine,devoncarew/sky_engine,devoncarew/sky_engine,flutter/engine,jason-simmons/flutter_engine,mikejurka/engine,mikejurka/engine,jason-simmons/flutter_engine,krisgiesing/sky_engine,chinmaygarde/sky_engine,aam/engine,aam/engine,cdotstout/sky_engine,jason-simmons/flutter_engine,rmacnak-google/engine,tvolkert/engine,chinmaygarde/sky_engine,jason-simmons/flutter_engine,krisgiesing/sky_engine,mikejurka/engine,jamesr/flutter_engine,devoncarew/engine,devoncarew/sky_engine,jamesr/flutter_engine,jason-simmons/sky_engine,krisgiesing/sky_engine,cdotstout/sky_engine,flutter/engine,jamesr/sky_engine,tvolkert/engine,chinmaygarde/flutter_engine,krisgiesing/sky_engine,tvolkert/engine,devoncarew/engine,jason-simmons/sky_engine,jason-simmons/flutter_engine,jamesr/sky_engine,jason-simmons/sky_engine,jamesr/sky_engine,cdotstout/sky_engine,tvolkert/engine,rmacnak-google/engine,devoncarew/engine,krisgiesing/sky_engine,devoncarew/engine,Hixie/sky_engine,chinmaygarde/flutter_engine,Hixie/sky_engine,jamesr/flutter_engine,jason-simmons/flutter_engine,tvolkert/engine,mikejurka/engine,flutter/engine,mikejurka/engine,cdotstout/sky_engine,tvolkert/engine,cdotstout/sky_engine,jason-simmons/sky_engine,jamesr/sky_engine,mikejurka/engine,krisgiesing/sky_engine,aam/engine,aam/engine,jamesr/flutter_engine,jamesr/flutter_engine,chinmaygarde/sky_engine,cdotstout/sky_engine,tvolkert/engine,flutter/engine,flutter/engine,jason-simmons/sky_engine,jason-simmons/flutter_engine,flutter/engine,devoncarew/engine,Hixie/sky_engine,rmacnak-google/engine,devoncarew/sky_engine,devoncarew/sky_engine,chinmaygarde/sky_engine,chinmaygarde/sky_engine,devoncarew/engine,mikejurka/engine,chinmaygarde/sky_engine,chinmaygarde/flutter_engine,jamesr/sky_engine,rmacnak-google/engine,rmacnak-google/engine,jason-simmons/sky_engine,aam/engine,flutter/engine,jamesr/flutter_engine,jamesr/flutter_engine,aam/engine,krisgiesing/sky_engine,aam/engine,chinmaygarde/flutter_engine,Hixie/sky_engine,mikejurka/engine,jamesr/sky_engine,chinmaygarde/flutter_engine,Hixie/sky_engine,chinmaygarde/flutter_engine,devoncarew/sky_engine,chinmaygarde/sky_engine,jamesr/sky_engine,mikejurka/engine,devoncarew/engine,cdotstout/sky_engine,jamesr/flutter_engine,devoncarew/sky_engine,chinmaygarde/flutter_engine,jamesr/flutter_engine,jason-simmons/sky_engine,jason-simmons/flutter_engine,flutter/engine,Hixie/sky_engine,Hixie/sky_engine