Inverse fill support in PDF

BUG= https://code.google.com/p/skia/issues/detail?id=241 (partial fix)
R=edisonn@google.com, vandebo@chromium.org, reed@google.com

Author: richardlin@chromium.org

Review URL: https://chromiumcodereview.appspot.com/19519017

git-svn-id: http://skia.googlecode.com/svn/trunk@10476 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gyp/gmslides.gypi b/gyp/gmslides.gypi
index 3af7d73..cb88389 100644
--- a/gyp/gmslides.gypi
+++ b/gyp/gmslides.gypi
@@ -61,6 +61,7 @@
     '../gm/hittestpath.cpp',
     '../gm/imageblur.cpp',
     '../gm/imagemagnifier.cpp',
+    '../gm/inversepaths.cpp',
     '../gm/lerpmode.cpp',
     '../gm/lighting.cpp',
     '../gm/image.cpp',