Deprecate setMinApi(TestRuntime)

Change-Id: I73ce6dc92a3face18f3078e79885da86771f99bb
diff --git a/src/test/java/com/android/tools/r8/TestCompilerBuilder.java b/src/test/java/com/android/tools/r8/TestCompilerBuilder.java
index 019fed1..0305053 100644
--- a/src/test/java/com/android/tools/r8/TestCompilerBuilder.java
+++ b/src/test/java/com/android/tools/r8/TestCompilerBuilder.java
@@ -169,6 +169,8 @@
     return self();
   }
 
+  /** @deprecated use {@link #setMinApi(AndroidApiLevel)} instead. */
+  @Deprecated
   public T setMinApi(TestRuntime runtime) {
     if (runtime.isDex()) {
       setMinApi(runtime.asDex().getMinApiLevel());