Add additional_jar_files to inputs for java_library targets.

build/config/android/internal_rules.gni

Index: build/config/android/internal_rules.gni
diff --git a/build/config/android/internal_rules.gni b/build/config/android/internal_rules.gni
index 539fbd7b973c6dd12780e1649e85dc22fd91778c..a989912bf6f0b84477b323a440951c732d2f020c 100644
--- a/build/config/android/internal_rules.gni
+++ b/build/config/android/internal_rules.gni
@@ -2049,8 +2049,11 @@ if (enable_java_templates) {
       foreach(e, _processor_args) {
         args += [ "--processor-arg=" + e ]
       }
-      foreach(e, _additional_jar_files) {
-        args += [ "--additional-jar-file=" + e ]
+      foreach(file_tuple, _additional_jar_files) {
+        # Each element is of length two, [ path_to_file, path_to_put_in_jar ]
+        inputs += [ file_tuple[0] ]
+        args +=
+            [ "--additional-jar-file=" + file_tuple[0] + ":" + file_tuple[1] ]
       }
       if (invoker.java_files != []) {
         args += [ "@" + rebase_path(invoker.java_sources_file, root_build_dir) ]