Use platform-specific path separator for --dependencyManifests.

This is read by PathListConverter which uses java.io.File#pathSeparator which
is already platform-specific.

--
PiperOrigin-RevId: 150008708
MOS_MIGRATED_REVID=150008708
diff --git a/src/main/java/com/google/devtools/build/lib/rules/android/ResourceShrinkerActionBuilder.java b/src/main/java/com/google/devtools/build/lib/rules/android/ResourceShrinkerActionBuilder.java
index f9f6ad2..517b124 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/android/ResourceShrinkerActionBuilder.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/android/ResourceShrinkerActionBuilder.java
@@ -204,7 +204,10 @@
     inputs.add(primaryResources.getManifest());
 
     List<Artifact> dependencyManifests = getManifests(dependencyResources);
-    commandLine.addJoinExecPaths("--dependencyManifests", ":", dependencyManifests);
+    commandLine.addJoinExecPaths(
+        "--dependencyManifests",
+        ruleContext.getConfiguration().getHostPathSeparator(),
+        dependencyManifests);
     inputs.addAll(dependencyManifests);
 
     List<String> resourcePackages = getResourcePackages(primaryResources, dependencyResources);