Update framework to support r5967 of Skia.

bug: 6906025
Change-Id: Iefdb830ec3aa2ab3472c1c142484a7aa21788a15
diff --git a/libs/hwui/Android.mk b/libs/hwui/Android.mk
index 549edd2..67359ad 100644
--- a/libs/hwui/Android.mk
+++ b/libs/hwui/Android.mk
@@ -42,6 +42,7 @@
 		external/skia/include/core \
 		external/skia/include/effects \
 		external/skia/include/images \
+		external/skia/src/core \
 		external/skia/src/ports \
 		external/skia/include/utils