Remove DrawFace enum from GrPipelineBuilder

This gets GrPipelineBuilder.h out of the headers

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2165283002

Committed: https://skia.googlesource.com/skia/+/da152ebb032c61bb2561bbb3e9a78037ad174d34
Review-Url: https://codereview.chromium.org/2165283002
diff --git a/src/gpu/GrPathRenderer.h b/src/gpu/GrPathRenderer.h
index 73e8e03..6547a41 100644
--- a/src/gpu/GrPathRenderer.h
+++ b/src/gpu/GrPathRenderer.h
@@ -8,6 +8,7 @@
 #ifndef GrPathRenderer_DEFINED
 #define GrPathRenderer_DEFINED
 
+#include "GrCaps.h"
 #include "GrDrawContext.h"
 #include "GrPaint.h"
 #include "GrResourceProvider.h"