Also mark targets of super calls as reachable.

BUG=

Change-Id: Ib43a0d4520a19b2abb07e8626fb19f66fec628c9
diff --git a/src/main/java/com/android/tools/r8/shaking/Enqueuer.java b/src/main/java/com/android/tools/r8/shaking/Enqueuer.java
index 6fb9d2e..6dbf79b 100644
--- a/src/main/java/com/android/tools/r8/shaking/Enqueuer.java
+++ b/src/main/java/com/android/tools/r8/shaking/Enqueuer.java
@@ -682,6 +682,7 @@
     }
     superInvokeDependencies.computeIfAbsent(from, ignore -> Sets.newIdentityHashSet()).add(target);
     if (liveMethods.contains(from)) {
+      markMethodAsTargeted(target, KeepReason.invokedViaSuperFrom(from));
       markVirtualMethodAsLive(target, KeepReason.invokedViaSuperFrom(from));
     }
   }
@@ -822,6 +823,7 @@
             Log.verbose(getClass(), "Found super invoke constraint on `%s`.",
                 superCallTarget.method);
           }
+          markMethodAsTargeted(superCallTarget, KeepReason.invokedViaSuperFrom(method));
           markVirtualMethodAsLive(superCallTarget, KeepReason.invokedViaSuperFrom(method));
         }
       }