Non-rect polygons are not covered in GM cases, such as triangle, trapezoid, diamond, polygons with lots of edges, concave polygons, etc, especially for stroke-style and stroke-and-fill style painters. So add a GM case to avoid potential rendering errors.,


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git-svn-id: 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gmslides.gypi b/gmslides.gypi
index ba7c1ca..c8a82c2 100644
--- a/gmslides.gypi
+++ b/gmslides.gypi
@@ -105,6 +105,7 @@
+    '../gm/polygons.cpp',