Enable parameter files for manifest merger actions.

RELNOTES: None.
PiperOrigin-RevId: 166215145
diff --git a/src/main/java/com/google/devtools/build/lib/rules/android/ManifestMergerActionBuilder.java b/src/main/java/com/google/devtools/build/lib/rules/android/ManifestMergerActionBuilder.java
index 0f0c682..c4049d5 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/android/ManifestMergerActionBuilder.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/android/ManifestMergerActionBuilder.java
@@ -140,7 +140,9 @@
       // list-type and list-of-list-type flags that use such problematic separators in favor of
       // multi-value flags (to remove one level of listing) and by changing all list separators to a
       // platform-safe character (= comma).
-      this.spawnActionBuilder.alwaysUseParameterFile(ParameterFileType.UNQUOTED);
+      spawnActionBuilder.alwaysUseParameterFile(ParameterFileType.UNQUOTED);
+    } else {
+      spawnActionBuilder.useParameterFile(ParameterFileType.UNQUOTED);
     }
 
     ruleContext.registerAction(
diff --git a/src/tools/android/java/com/google/devtools/build/android/ManifestMergerAction.java b/src/tools/android/java/com/google/devtools/build/android/ManifestMergerAction.java
index 5f0681e..43ef880 100644
--- a/src/tools/android/java/com/google/devtools/build/android/ManifestMergerAction.java
+++ b/src/tools/android/java/com/google/devtools/build/android/ManifestMergerAction.java
@@ -29,6 +29,7 @@
 import com.google.devtools.common.options.OptionsBase;
 import com.google.devtools.common.options.OptionsParser;
 import java.io.IOException;
+import java.nio.file.FileSystems;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.StandardCopyOption;
@@ -184,6 +185,7 @@
 
   public static void main(String[] args) throws Exception {
     OptionsParser optionsParser = OptionsParser.newOptionsParser(Options.class);
+    optionsParser.enableParamsFileSupport(FileSystems.getDefault());
     optionsParser.parseAndExitUponError(args);
     options = optionsParser.getOptions(Options.class);