libandroidfw: move ConfigDescription from aapt2 to libandroidfw

This is to allow idmap2 to access ConfigDescription.

Test: libandroidfw_tests
Test: aapt2_tests
Change-Id: I54210bbbd8dad5903cb7100807df977efa394ad5
diff --git a/tools/aapt2/ResourceParser_test.cpp b/tools/aapt2/ResourceParser_test.cpp
index ee496d5..0dff664 100644
--- a/tools/aapt2/ResourceParser_test.cpp
+++ b/tools/aapt2/ResourceParser_test.cpp
@@ -29,6 +29,7 @@
 using ::aapt::io::StringInputStream;
 using ::aapt::test::StrValueEq;
 using ::aapt::test::ValueEq;
+using ::android::ConfigDescription;
 using ::android::Res_value;
 using ::android::ResTable_map;
 using ::android::StringPiece;