Revert of [wasm] Embedder can control what buffers wasm compilation works on.

test/mjsunit/wasm/test-wasm-compilation-control.js

-// Copyright 2017 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Flags: --allow-natives-syntax --validate-asm
-
-load("test/mjsunit/wasm/wasm-constants.js");
-load("test/mjsunit/wasm/wasm-module-builder.js");
-
-let buffer = (() => {
-  var builder = new WasmModuleBuilder();
-  builder.addFunction("f", kSig_i_v)
-    .addBody([kExprI32Const, 42])
-    .exportAs("f");
-  return builder.toBuffer();
-})();
-
-// allow up to the buffer size
-%SetWasmCompileControls(buffer.byteLength, true);
-%SetWasmInstantiateControls();
-var m = new WebAssembly.Module(buffer);
-var i = new WebAssembly.Instance(m);
-assertEquals(i.exports.f(), 42);
-
-// the buffer can't compile synchronously, but we allow async compile
-%SetWasmCompileControls(buffer.byteLength - 1, true);
-// test first that we can't sync-instantiate this module anymore
-try {
-  i = new WebAssembly.Instance(m);
-} catch (e) {
-  assertTrue(e instanceof RangeError);
-}
-
-//...but we can async-instantiate it
-
-WebAssembly.instantiate(m)
-  .then(instance => i = instance,
-        assertUnreachable);
-%RunMicrotasks();
-assertTrue(i instanceof WebAssembly.Instance);
-
-try {
-  m = new WebAssembly.Module(buffer);
-  assertUnreachable();
-} catch (e) {
-  assertTrue(e instanceof RangeError);
-}
-
-WebAssembly.compile(buffer)
-  .then(res => m = res,
-        m = null);
-
-%RunMicrotasks();
-assertTrue(m instanceof WebAssembly.Module)
-
-WebAssembly.instantiate(buffer)
-  .then(res => m = res.module,
-        m = null);
-
-%RunMicrotasks();
-assertTrue(m instanceof WebAssembly.Module);
-
-// not even async compile works.
-var ex;
-%SetWasmCompileControls(buffer.byteLength - 1, false);
-WebAssembly.compile(buffer)
-  .then(ex = null,
-        e => ex = e);
-
-%RunMicrotasks();
-assertTrue(ex instanceof RangeError);
-
-WebAssembly.instantiate(buffer)
-  .then(ex = null,
-        e => ex = e);
-%RunMicrotasks();
-assertTrue(ex instanceof RangeError);
-
-
-// For asm-wasm, these controls are ignored.
-%SetWasmCompileControls(0, false);
-function assertValidAsm(func) {
-  assertTrue(%IsAsmWasmCode(func));
-}
-
-function assertWasm(expected, func) {
-  assertEquals(
-    expected, func(undefined, undefined, new ArrayBuffer(1024)).caller());
-  assertValidAsm(func);
-}
-
-function TestAsmWasmIsUnaffected() {
-  "use asm";
-  function caller() {
-    return 43;
-  }
-
-  return {caller: caller};
-}
-
-assertWasm(43, TestAsmWasmIsUnaffected);