Stop rewriting async super.function() calls with Object.getPrototypeOf

This is in effect a rollback of the functional change in #3103

Preserving the `super.function()` syntax is more spec-compliant in some cases,
and MS Edge 17 is incredibly rare these days.

PiperOrigin-RevId: 406004773

Author: blickly

src/com/google/javascript/jscomp/TranspilationPasses.java

@@ -188,30 +188,14 @@ public static void addRewritePolyfillPass(List<PassFactory> passes) {
   private static final PassFactory rewriteAsyncFunctions =
       PassFactory.builder()
           .setName("rewriteAsyncFunctions")
-          .setInternalFactory(
-              (compiler) ->
-                  new RewriteAsyncFunctions.Builder(compiler)
-                      // If ES2015 classes will not be transpiled away later,
-                      // transpile away property references that use `super` in async functions.
-                      // See explanation in RewriteAsyncFunctions.
-                      .rewriteSuperPropertyReferencesWithoutSuper(
-                          !compiler.getOptions().needsTranspilationFrom(FeatureSet.ES2015))
-                      .build())
+          .setInternalFactory((compiler) -> new RewriteAsyncFunctions.Builder(compiler).build())
           .setFeatureSetForChecks()
           .build();
 
   private static final PassFactory rewriteAsyncIteration =
       PassFactory.builder()
           .setName("rewriteAsyncIteration")
-          .setInternalFactory(
-              (compiler) ->
-                  new RewriteAsyncIteration.Builder(compiler)
-                      // If ES2015 classes will not be transpiled away later,
-                      // transpile away property references that use `super` in async iteration.
-                      // See explanation in RewriteAsyncIteration.
-                      .rewriteSuperPropertyReferencesWithoutSuper(
-                          !compiler.getOptions().needsTranspilationFrom(FeatureSet.ES2015))
-                      .build())
+          .setInternalFactory((compiler) -> new RewriteAsyncIteration.Builder(compiler).build())
           .setFeatureSetForChecks()
           .build();
 

test/com/google/javascript/jscomp/integration/IntegrationTest.java

@@ -2622,7 +2622,7 @@ public void testAsyncFunctionSuper() {
             "class Baz extends Foo {",
             "  bar() {",
             "    const $jscomp$async$this = this, $jscomp$async$super$get$bar =",
-            "        () => Object.getPrototypeOf(Object.getPrototypeOf(this)).bar;",
+            "        () => super.bar;",
             "    return $jscomp.asyncExecutePromiseGeneratorFunction(function*() {",
             "      yield Promise.resolve();",
             "      $jscomp$async$super$get$bar().call($jscomp$async$this);",
@@ -2676,7 +2676,7 @@ public void testAsyncIterationSuper() {
             "  bar() {",
             "    const $jscomp$asyncIter$this = this,",
             "          $jscomp$asyncIter$super$get$bar =",
-            "              () => Object.getPrototypeOf(Object.getPrototypeOf(this)).bar;",
+            "              () => super.bar;",
             "    return new $jscomp.AsyncGeneratorWrapper(function*() {",
             "      $jscomp$asyncIter$super$get$bar().call($jscomp$asyncIter$this).next();",
             "    }());",