Revert of Disable slow BootstrapSandboxTest.DistributedNotifications_SandboxDeny

sandbox/mac/bootstrap_sandbox_unittest.mm

 // Copyright 2014 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 "sandbox/mac/bootstrap_sandbox.h"
 
 #include <CoreFoundation/CoreFoundation.h>
 #import <Foundation/Foundation.h>
 #include <mach/mach.h>
 #include <servers/bootstrap.h>
@@ skipping 116 matching lines @@
   EXPECT_TRUE(base::WaitForExitCode(pid, &code));
   EXPECT_EQ(0, code);
 
   [observer waitForNotification];
   EXPECT_EQ(1, [observer receivedCount]);
   EXPECT_EQ(pid, [[observer object] intValue]);
 }
 
 // Run the test with the sandbox enabled without notifications on the policy
 // whitelist.
-// Disabled, http://crbug.com/407066 .
-TEST_F(BootstrapSandboxTest, DISABLED_DistributedNotifications_SandboxDeny) {
+TEST_F(BootstrapSandboxTest, DistributedNotifications_SandboxDeny) {
   base::scoped_nsobject<DistributedNotificationObserver> observer(
       [[DistributedNotificationObserver alloc] init]);
 
   sandbox_->RegisterSandboxPolicy(1, BaselinePolicy());
   RunChildWithPolicy(1, kNotificationTestMain, NULL);
 
   [observer waitForNotification];
   EXPECT_EQ(0, [observer receivedCount]);
   EXPECT_EQ(nil, [observer object]);
 }
@@ skipping 362 matching lines @@
   kr = mach_msg_receive(&rcv_msg.header);
   MACH_CHECK(kr == KERN_SUCCESS, kr) << "mach_msg_receive";
 
   // Try to message the sandbox.
   bootstrap_look_up(bootstrap_port, "test", &port);
 
   return 0;
 }
 
 }  // namespace sandbox