Update filter tool to allow more flexible filtering

https://codereview.appspot.com/7227055/



git-svn-id: http://skia.googlecode.com/svn/trunk@7492 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gyp/core.gypi b/gyp/core.gypi
index 8c75c1f..d5f76a3 100644
--- a/gyp/core.gypi
+++ b/gyp/core.gypi
@@ -85,6 +85,8 @@
         '<(skia_src_path)/core/SkFloat.h',
         '<(skia_src_path)/core/SkFloatBits.cpp',
         '<(skia_src_path)/core/SkFontHost.cpp',
+        '<(skia_src_path)/core/SkFontDescriptor.cpp',
+        '<(skia_src_path)/core/SkFontDescriptor.h',
         '<(skia_src_path)/core/SkGeometry.cpp',
         '<(skia_src_path)/core/SkGlyphCache.cpp',
         '<(skia_src_path)/core/SkGlyphCache.h',