Update and check design lib API files

BUG: 19478450
Change-Id: I5712694f5981d4c3dd98e55d942d9de351d2e7b3
diff --git a/design/Android.mk b/design/Android.mk
index 7db921b..08ac299 100644
--- a/design/Android.mk
+++ b/design/Android.mk
@@ -87,3 +87,12 @@
     android-support-v4 \
     android-support-v7-appcompat
 include $(BUILD_STATIC_JAVA_LIBRARY)
+
+# API Check
+# ---------------------------------------------
+support_module := $(LOCAL_MODULE)
+support_module_api_dir := $(LOCAL_PATH)/api
+support_module_src_files := $(LOCAL_SRC_FILES)
+support_module_java_libraries := $(LOCAL_JAVA_LIBRARIES)
+support_module_java_packages := android.support.design.widget
+include $(SUPPORT_API_CHECK)