Add utility method for all runtimes and api levels

Change-Id: I71544092e47a055d98fe2af923234475b8caff94
diff --git a/src/test/java/com/android/tools/r8/TestParametersBuilder.java b/src/test/java/com/android/tools/r8/TestParametersBuilder.java
index bbcfb65..e4522e1 100644
--- a/src/test/java/com/android/tools/r8/TestParametersBuilder.java
+++ b/src/test/java/com/android/tools/r8/TestParametersBuilder.java
@@ -56,6 +56,10 @@
     return withCfRuntimes().withDexRuntimes();
   }
 
+  public TestParametersBuilder withAllRuntimesAndApiLevels() {
+    return withCfRuntimes().withDexRuntimes().withAllApiLevels();
+  }
+
   /** Add specific runtime if available. */
   public TestParametersBuilder withCfRuntime(CfVm runtime) {
     return withCfRuntimeFilter(vm -> vm == runtime);