add SkDeviceLooper to handle larger-than-fixedpoint

BUG=

Review URL: https://codereview.chromium.org/23392006

git-svn-id: http://skia.googlecode.com/svn/trunk/gyp@10943 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/core.gypi b/core.gypi
index e4631af..dbc3291 100644
--- a/core.gypi
+++ b/core.gypi
@@ -70,6 +70,7 @@
         '<(skia_src_path)/core/SkDebug.cpp',
         '<(skia_src_path)/core/SkDeque.cpp',
         '<(skia_src_path)/core/SkDevice.cpp',
+        '<(skia_src_path)/core/SkDeviceLooper.cpp',
         '<(skia_src_path)/core/SkDeviceProfile.cpp',
         '<(skia_src_path)/core/SkDither.cpp',
         '<(skia_src_path)/core/SkDraw.cpp',