Revert "This is a speculative chain of reverts to improve a Chrome"

src/js/harmony-atomics.js

Index: src/js/harmony-atomics.js
diff --git a/src/js/harmony-atomics.js b/src/js/harmony-atomics.js
deleted file mode 100644
index 16a4aae69ab3ebd4750b533905de1f60f533d61b..0000000000000000000000000000000000000000
--- a/src/js/harmony-atomics.js
+++ /dev/null
@@ -1,152 +0,0 @@
-// Copyright 2015 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.
-
-(function(global, utils) {
-
-"use strict";
-
-%CheckIsBootstrapping();
-
-// -------------------------------------------------------------------
-// Imports
-
-var GlobalObject = global.Object;
-var MaxSimple;
-var MinSimple;
-var toStringTagSymbol = utils.ImportNow("to_string_tag_symbol");
-
-utils.Import(function(from) {
-  MaxSimple = from.MaxSimple;
-  MinSimple = from.MinSimple;
-});
-
-// -------------------------------------------------------------------
-
-
-function CheckSharedIntegerTypedArray(ia) {
-  if (!%IsSharedIntegerTypedArray(ia)) {
-    throw %make_type_error(kNotIntegerSharedTypedArray, ia);
-  }
-}
-
-function CheckSharedInteger32TypedArray(ia) {
-  CheckSharedIntegerTypedArray(ia);
-  if (!%IsSharedInteger32TypedArray(ia)) {
-    throw %make_type_error(kNotInt32SharedTypedArray, ia);
-  }
-}
-
-// https://tc39.github.io/ecmascript_sharedmem/shmem.html#Atomics.ValidateAtomicAccess
-function ValidateIndex(index, length) {
-  var numberIndex = TO_NUMBER(index);
-  var accessIndex = TO_INTEGER(numberIndex);
-  if (numberIndex !== accessIndex) {
-    throw %make_range_error(kInvalidAtomicAccessIndex);
-  }
-  if (accessIndex < 0 || accessIndex >= length) {
-    throw %make_range_error(kInvalidAtomicAccessIndex);
-  }
-  return accessIndex;
-}
-
-//-------------------------------------------------------------------
-
-function AtomicsCompareExchangeJS(sta, index, oldValue, newValue) {
-  CheckSharedIntegerTypedArray(sta);
-  index = ValidateIndex(index, %_TypedArrayGetLength(sta));
-  oldValue = TO_NUMBER(oldValue);
-  newValue = TO_NUMBER(newValue);
-  return %_AtomicsCompareExchange(sta, index, oldValue, newValue);
-}
-
-function AtomicsAddJS(ia, index, value) {
-  CheckSharedIntegerTypedArray(ia);
-  index = ValidateIndex(index, %_TypedArrayGetLength(ia));
-  value = TO_NUMBER(value);
-  return %_AtomicsAdd(ia, index, value);
-}
-
-function AtomicsSubJS(ia, index, value) {
-  CheckSharedIntegerTypedArray(ia);
-  index = ValidateIndex(index, %_TypedArrayGetLength(ia));
-  value = TO_NUMBER(value);
-  return %_AtomicsSub(ia, index, value);
-}
-
-function AtomicsAndJS(ia, index, value) {
-  CheckSharedIntegerTypedArray(ia);
-  index = ValidateIndex(index, %_TypedArrayGetLength(ia));
-  value = TO_NUMBER(value);
-  return %_AtomicsAnd(ia, index, value);
-}
-
-function AtomicsOrJS(ia, index, value) {
-  CheckSharedIntegerTypedArray(ia);
-  index = ValidateIndex(index, %_TypedArrayGetLength(ia));
-  value = TO_NUMBER(value);
-  return %_AtomicsOr(ia, index, value);
-}
-
-function AtomicsXorJS(ia, index, value) {
-  CheckSharedIntegerTypedArray(ia);
-  index = ValidateIndex(index, %_TypedArrayGetLength(ia));
-  value = TO_NUMBER(value);
-  return %_AtomicsXor(ia, index, value);
-}
-
-function AtomicsIsLockFreeJS(size) {
-  return %_AtomicsIsLockFree(TO_INTEGER(size));
-}
-
-function AtomicsWaitJS(ia, index, value, timeout) {
-  CheckSharedInteger32TypedArray(ia);
-  index = ValidateIndex(index, %_TypedArrayGetLength(ia));
-  if (IS_UNDEFINED(timeout)) {
-    timeout = INFINITY;
-  } else {
-    timeout = TO_NUMBER(timeout);
-    if (NUMBER_IS_NAN(timeout)) {
-      timeout = INFINITY;
-    } else {
-      timeout = MaxSimple(0, timeout);
-    }
-  }
-  return %AtomicsWait(ia, index, value, timeout);
-}
-
-function AtomicsWakeJS(ia, index, count) {
-  CheckSharedInteger32TypedArray(ia);
-  index = ValidateIndex(index, %_TypedArrayGetLength(ia));
-  if (IS_UNDEFINED(count)) {
-    count = kMaxUint32;
-  } else {
-    // Clamp to [0, kMaxUint32].
-    count = MinSimple(MaxSimple(0, TO_INTEGER(count)), kMaxUint32);
-  }
-  return %AtomicsWake(ia, index, count);
-}
-
-// -------------------------------------------------------------------
-
-var Atomics = global.Atomics;
-
-// The Atomics global is defined by the bootstrapper.
-
-%AddNamedProperty(Atomics, toStringTagSymbol, "Atomics", READ_ONLY | DONT_ENUM);
-
-utils.InstallFunctions(Atomics, DONT_ENUM, [
-  // TODO(binji): remove the rest of the (non futex) Atomics functions as they
-  // become builtins.
-  "compareExchange", AtomicsCompareExchangeJS,
-  "add", AtomicsAddJS,
-  "sub", AtomicsSubJS,
-  "and", AtomicsAndJS,
-  "or", AtomicsOrJS,
-  "xor", AtomicsXorJS,
-  "isLockFree", AtomicsIsLockFreeJS,
-  "wait", AtomicsWaitJS,
-  "wake", AtomicsWakeJS,
-]);
-
-})