Use libabigail to track NDK ABIs.

The local diffing behavior is currently flagged off so we can land
this in stages.

Test: pytest cc
Test: treehugger
Test: development/tools/update_ndk_abi.sh
Test: m ndk
Bug: http://b/156513478
Change-Id: Iccb314411bc74ea3ddfea8b85b0539709295f65a
diff --git a/cc/Android.bp b/cc/Android.bp
index 1fc8d9f..46740dc 100644
--- a/cc/Android.bp
+++ b/cc/Android.bp
@@ -65,9 +65,10 @@
         "test.go",
         "toolchain_library.go",
 
-        "ndk_prebuilt.go",
+        "ndk_abi.go",
         "ndk_headers.go",
         "ndk_library.go",
+        "ndk_prebuilt.go",
         "ndk_sysroot.go",
 
         "llndk_library.go",