Enable webrtc_nonparallel_tests on iOS simulator

webrtc/base/virtualsocket_unittest.cc

 /*
  *  Copyright 2006 The WebRTC 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 in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 894 matching lines @@
 }
 
 TEST_F(VirtualSocketServerTest, bandwidth_v4) {
   BandwidthTest(kIPv4AnyAddress);
 }
 
 TEST_F(VirtualSocketServerTest, bandwidth_v6) {
   BandwidthTest(kIPv6AnyAddress);
 }
 
-TEST_F(VirtualSocketServerTest, delay_v4) {
+// Disabled on iOS simulator since it's a test that relies on being able to
+// process packets fast enough in real time, which isn't the case in the
+// simulator.
+#if defined(TARGET_IPHONE_SIMULATOR)
+#define MAYBE_delay_v4 DISABLED_delay_v4
+#else
+#define MAYBE_delay_v4 delay_v4
+#endif
+TEST_F(VirtualSocketServerTest, MAYBE_delay_v4) {
   DelayTest(kIPv4AnyAddress);
 }
 
 // See: https://code.google.com/p/webrtc/issues/detail?id=2409
 TEST_F(VirtualSocketServerTest, DISABLED_delay_v6) {
   DelayTest(kIPv6AnyAddress);
 }
 
 // Works, receiving socket sees 127.0.0.2.
 TEST_F(VirtualSocketServerTest, CanConnectFromMappedIPv6ToIPv4Any) {
@@ skipping 196 matching lines @@
           << " N=" << kTestSamples[sidx];
         EXPECT_NEAR(kStdDev, stddev, 0.1 * kStdDev)
           << "M=" << kTestMean[midx]
           << " SD=" << kStdDev
           << " N=" << kTestSamples[sidx];
         delete f;
       }
     }
   }
 }