fix define comments
add generated comment for includes

R=caryclark@google.com

Docs-Preview: https://skia.org/?cl=132924
Bug: skia:6898
Change-Id: I42034e2753ed079dd0d0e3ae99f976d32ffaf77a
Reviewed-on: https://skia-review.googlesource.com/132924
Reviewed-by: Cary Clark <caryclark@skia.org>
Auto-Submit: Cary Clark <caryclark@skia.org>
Commit-Queue: Cary Clark <caryclark@skia.org>
diff --git a/docs/SkColor4f_Reference.bmh b/docs/SkColor4f_Reference.bmh
index a23431e..19d4b5d 100644
--- a/docs/SkColor4f_Reference.bmh
+++ b/docs/SkColor4f_Reference.bmh
@@ -285,13 +285,20 @@
 # ------------------------------------------------------------------------------
 
 #Method SkPM4f premul() const
-#Deprecated
+#In Utility
+#Line # returns Premultiplied color; internal use only ##
+#Private
+Internal use only.
+##
+#Return Premultiplied color ##
 #Method ##
 
 #Struct SkColor4f ##
 
 #Struct SkPM4f
-#Deprecated
+#Private
+Internal use only.
+##
 ##
 
 #Topic Color4f ##