Use Path Ops to generate PDF clips

R=vandebo@chromium.org, edisonn@google.com, caryclark@google.com

Author: richardlin@chromium.org

Review URL: https://chromiumcodereview.appspot.com/21161003

git-svn-id: http://skia.googlecode.com/svn/trunk/gyp@10633 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gmslides.gypi b/gmslides.gypi
index 8d0b2e9..71eb4d2 100644
--- a/gmslides.gypi
+++ b/gmslides.gypi
@@ -20,6 +20,7 @@
     '../gm/blurquickreject.cpp',
     '../gm/blurrect.cpp',
     '../gm/circles.cpp',
+    '../gm/circularclips.cpp',
     '../gm/colorfilterimagefilter.cpp',
     '../gm/colormatrix.cpp',
     '../gm/colortype.cpp',