Update tests after change of code printing to use retracer

Change-Id: Ie3035880bda11a78424730dbed24987354d64c3b
diff --git a/src/main/java/com/android/tools/r8/dex/code/DexInstruction.java b/src/main/java/com/android/tools/r8/dex/code/DexInstruction.java
index 94812b4..e6362d0 100644
--- a/src/main/java/com/android/tools/r8/dex/code/DexInstruction.java
+++ b/src/main/java/com/android/tools/r8/dex/code/DexInstruction.java
@@ -386,7 +386,7 @@
 
   @Override
   public String toString() {
-    return toString(null);
+    return toString(RetracerForCodePrinting.empty());
   }
 
   public abstract void write(
diff --git a/src/test/java/com/android/tools/r8/classmerging/vertical/VerticalClassMergerTest.java b/src/test/java/com/android/tools/r8/classmerging/vertical/VerticalClassMergerTest.java
index 1f9e6c7..7799ba7 100644
--- a/src/test/java/com/android/tools/r8/classmerging/vertical/VerticalClassMergerTest.java
+++ b/src/test/java/com/android/tools/r8/classmerging/vertical/VerticalClassMergerTest.java
@@ -1021,7 +1021,7 @@
     assertThat(method, isPresent());
     assertThat(
         method.getMethod().getCode().asCfCode().toString(),
-        containsString("invokeinterface classmerging.MergeDefaultMethodIntoClassTest$A.f()V"));
+        containsString("invokeinterface Lclassmerging/MergeDefaultMethodIntoClassTest$A;f()V"));
 
     runTestOnInput(
         testForR8(parameters.getBackend())