add support for high quality image filtering on the GPU

R=bsalomon@google.com, reed@google.com

Review URL: https://codereview.chromium.org/23779003

git-svn-id: http://skia.googlecode.com/svn/trunk@11087 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gyp/effects.gyp b/gyp/effects.gyp
index d0b8b4d..d22debb 100644
--- a/gyp/effects.gyp
+++ b/gyp/effects.gyp
@@ -16,6 +16,7 @@
       ],
       'include_dirs': [
         '../include/effects',
+        '../src/effects',
         '../src/core',
       ],
       'direct_dependent_settings': {