Revert of Disable flaky DestructiveScriptTest.MacrotaskRemoval

chrome/browser/extensions/execute_script_apitest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/strings/string_number_conversions.h"
 #include "build/build_config.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "net/dns/mock_host_resolver.h"
 
 class ExecuteScriptApiTest : public ExtensionApiTest {
@@ skipping 117 matching lines @@
 IN_PROC_BROWSER_TEST_P(DestructiveScriptTest, SynchronousRemoval) {
   ASSERT_TRUE(RunSubtest("synchronous")) << message_;
 }
 
 // Removes the frame at the frame's first scheduled microtask.
 IN_PROC_BROWSER_TEST_P(DestructiveScriptTest, MicrotaskRemoval) {
   ASSERT_TRUE(RunSubtest("microtask")) << message_;
 }
 
 // Removes the frame at the frame's first scheduled macrotask.
-// Test is flaky. crbug.com/722703
-IN_PROC_BROWSER_TEST_P(DestructiveScriptTest, DISABLED_MacrotaskRemoval) {
+IN_PROC_BROWSER_TEST_P(DestructiveScriptTest, MacrotaskRemoval) {
   ASSERT_TRUE(RunSubtest("macrotask")) << message_;
 }
 
 // Removes the frame at the first DOMNodeInserted event.
 IN_PROC_BROWSER_TEST_P(DestructiveScriptTest, DOMNodeInserted1) {
   ASSERT_TRUE(RunSubtest("domnodeinserted1")) << message_;
 }
 
 // Removes the frame at the second DOMNodeInserted event.
 IN_PROC_BROWSER_TEST_P(DestructiveScriptTest, DOMNodeInserted2) {
@@ skipping 16 matching lines @@
 }
 
 // Removes the frame at the third DOMSubtreeModified event.
 IN_PROC_BROWSER_TEST_P(DestructiveScriptTest, DOMSubtreeModified3) {
   ASSERT_TRUE(RunSubtest("domsubtreemodified3")) << message_;
 }
 
 INSTANTIATE_TEST_CASE_P(ExecuteScriptApiTest,
                         DestructiveScriptTest,
                         ::testing::Range(0, kDestructiveScriptTestBucketCount));