allow bookmaker methods to auto-populate

Adds
#Populate
as markup inside #Method, replacing
the method's description and #Param
and #Return. If present, this info
is retrieved from the include when
writing the web markdown and the
generated include.

TBR=caryclark@google.com

Docs-Preview: https://skia.org/?cl=162820
Bug: skia:
Change-Id: I5df16f227b86651d463e03ddd33849bb127891c0
Reviewed-on: https://skia-review.googlesource.com/c/162820
Commit-Queue: Cary Clark <caryclark@skia.org>
Auto-Submit: Cary Clark <caryclark@skia.org>
Reviewed-by: Cary Clark <caryclark@google.com>
Reviewed-by: Cary Clark <caryclark@skia.org>
diff --git a/docs/SkRect_Reference.bmh b/docs/SkRect_Reference.bmh
index d6dc20d..7571937 100644
--- a/docs/SkRect_Reference.bmh
+++ b/docs/SkRect_Reference.bmh
@@ -246,12 +246,7 @@
 
 #In Constructors
 #Line # constructs from ISize returning (0, 0, width, height) ##
-Returns constructed IRect set to (0, 0, size.width(), size.height()).
-Does not validate input; size.width() or size.height() may be negative.
-
-#Param size  integer values for Rect width and height ##
-
-#Return bounds (0, 0, size.width(), size.height()) ##
+#Populate
 
 #Example
     SkRect rect1 = SkRect::MakeSize({2, 35});