Allow ResourceShrinkerAction to support splits.

This is needed to support both shrinking and splitting at the same time,
which will become the default for any android_binary which has splits
defined on it once shrinking becomes default (if it hasn't already).

--
PiperOrigin-RevId: 142497302
MOS_MIGRATED_REVID=142497302

src/tools/android/java/com/google/devtools/build/android/ResourceShrinkerAction.java

@@ -244,7 +244,7 @@ public static void main(String[] args) throws Exception {
           null /* packageForR */,
           new FlagAaptOptions(aaptConfigOptions),
           aaptConfigOptions.resourceConfigs,
-          ImmutableList.<String>of() /* splits */,
+          aaptConfigOptions.splits,
           new MergedAndroidData(
               shrunkResources, resourceFiles.resolve("assets"), options.primaryManifest),
           ImmutableList.<DependencyAndroidData>of() /* libraries */,