Try re-enabling VoiceChannel::TestInit.

This test was disabled for being flaky on the bots.
Try reenabling it to see if something has changed.

Bug: webrtc:7247
Change-Id: I65ce2cf6ce7a3761247369255d9ba106aa3e53f9
Reviewed-on: https://webrtc-review.googlesource.com/3262
Reviewed-by: Per Kjellander <perkj@webrtc.org>
Commit-Queue: Kári Helgason <kthelgason@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#20320}
diff --git a/pc/channel_unittest.cc b/pc/channel_unittest.cc
index b5517da..ff5cea5 100644
--- a/pc/channel_unittest.cc
+++ b/pc/channel_unittest.cc
@@ -2259,14 +2259,7 @@
       : Base(false, kH264Packet, kRtcpReport, NetworkIsWorker::No) {}
 };
 
-// VoiceChannelSingleThreadTest
-// Flaky on iOS Simualtor: bugs.webrtc.org/7247
-#if defined(WEBRTC_IOS)
-#define MAYBE_TestInit DISABLED_TestInit
-#else
-#define MAYBE_TestInit TestInit
-#endif
-TEST_F(VoiceChannelSingleThreadTest, MAYBE_TestInit) {
+TEST_F(VoiceChannelSingleThreadTest, TestInit) {
   Base::TestInit();
   EXPECT_FALSE(media_channel1_->IsStreamMuted(0));
   EXPECT_TRUE(media_channel1_->dtmf_info_queue().empty());