Remove secret wireframe mode from drawVertices

Now, drawing vertices without colors or a shader simply fills with the
paint color, like anyone would expect.

Bug: skia:9984
Change-Id: I9f7cf72f89948756b9c2c6e055a11c6b64fc22ff
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/282043
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
diff --git a/RELEASE_NOTES.txt b/RELEASE_NOTES.txt
index 53c3640..889291b 100644
--- a/RELEASE_NOTES.txt
+++ b/RELEASE_NOTES.txt
@@ -8,6 +8,10 @@
 
   * <insert new release note here>
 
+  * SkCanvas::drawVertices will now always fill the triangles specified by the vertices. Previously,
+    vertices with no colors and no (texture coordinates or shader) would be drawn in wireframe.
+    https://review.skia.org/282043
+
 * * *
 
 Milestone 83