Enable Mojo on iOS

mojo/public/cpp/utility/tests/mutex_unittest.cc

Index: mojo/public/cpp/utility/tests/mutex_unittest.cc
diff --git a/mojo/public/cpp/utility/tests/mutex_unittest.cc b/mojo/public/cpp/utility/tests/mutex_unittest.cc
index 5f75e60a3d9e5a28be94b384cfb037dc019934ed..6a7a8361fa967476ca2c3f983be167f578408688 100644
--- a/mojo/public/cpp/utility/tests/mutex_unittest.cc
+++ b/mojo/public/cpp/utility/tests/mutex_unittest.cc
@@ -225,33 +225,33 @@ TEST(MutexTest, TryLock) {
 // Test |AssertHeld()| (which is an actual user API).
 TEST(MutexTest, DebugAssertHeldFailure) {
   Mutex mutex;
-  EXPECT_DEATH(mutex.AssertHeld(), "");
+  EXPECT_DEATH_IF_SUPPORTED(mutex.AssertHeld(), "");
 }
 
 // Test other consistency checks.
 TEST(MutexTest, DebugAssertionFailures) {
   // Unlock without lock held.
-  EXPECT_DEATH({
+  EXPECT_DEATH_IF_SUPPORTED({
     Mutex mutex;
     mutex.Unlock();
   }, "");
 
   // Lock with lock held (on same thread).
-  EXPECT_DEATH({
+  EXPECT_DEATH_IF_SUPPORTED({
     Mutex mutex;
     mutex.Lock();
     mutex.Lock();
   }, "");
 
   // Try lock with lock held.
-  EXPECT_DEATH({
+  EXPECT_DEATH_IF_SUPPORTED({
     Mutex mutex;
     mutex.Lock();
     mutex.TryLock();
   }, "");
 
   // Destroy lock with lock held.
-  EXPECT_DEATH({
+  EXPECT_DEATH_IF_SUPPORTED({
     Mutex mutex;
     mutex.Lock();
   }, "");