vendor: Add Gboard overlay [1/2]

Change-Id: Ibaf2e7455ce33d52b429d8ea44f5773cd82a2d16
diff --git a/google/themes/GboardDarkTheme/Android.mk b/google/themes/GboardDarkTheme/Android.mk
new file mode 100644
index 0000000..3c7783e
--- /dev/null
+++ b/google/themes/GboardDarkTheme/Android.mk
@@ -0,0 +1,11 @@
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_PACKAGE_NAME := GBoardDarkTheme
+LOCAL_SDK_VERSION := current
+LOCAL_CERTIFICATE := platform
+LOCAL_PRIVILEGED_MODULE := false
+
+include $(BUILD_PACKAGE)