Add build file for libproc_macro2 am: b84a9bfdfe am: b166f7cf7d
am: 7a9a1ce903

Change-Id: I4bf79f0866ed28e58879c88579505c76d2cbe70d
diff --git a/Android.bp b/Android.bp
new file mode 100644
index 0000000..9421ccd
--- /dev/null
+++ b/Android.bp
@@ -0,0 +1,17 @@
+rust_library_rlib {
+    name: "libproc_macro2",
+    host_supported: true,
+    crate_name: "proc_macro2",
+    srcs: ["src/lib.rs"],
+    rlibs: ["libunicode_xid"],
+    flags: [
+        "--cfg u128",
+        "--cfg use_proc_macro",
+        "--cfg wrap_proc_macro",
+    ],
+    features: [
+        "default",
+        "proc-macro",
+    ],
+    edition: "2015",
+}