Add GM mixed_xfermodes. This is a work in progress and will be used to test fixes for GPU Xfermodes effects.
Review URL: https://codereview.chromium.org/13365005

git-svn-id: http://skia.googlecode.com/svn/trunk/gyp@8461 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gmslides.gypi b/gmslides.gypi
index 430eaa3..caff5a4 100644
--- a/gmslides.gypi
+++ b/gmslides.gypi
@@ -55,6 +55,7 @@
     '../gm/lcdtext.cpp',
     '../gm/linepaths.cpp',
     '../gm/matrixconvolution.cpp',
+    '../gm/mixedxfermodes.cpp',
     '../gm/modecolorfilters.cpp',
     '../gm/morphology.cpp',
     '../gm/ninepatchstretch.cpp',