[Fuchsia] Enable CPU profiling for the standalone VM

runtime/bin/thread_fuchsia.cc

Index: runtime/bin/thread_fuchsia.cc
diff --git a/runtime/bin/thread_fuchsia.cc b/runtime/bin/thread_fuchsia.cc
index 5a9b35103af78bad7c7cc95655928cbb3e2418bb..5b458d29d4af8dc2dc20ecee9ccc9c5f8875040c 100644
--- a/runtime/bin/thread_fuchsia.cc
+++ b/runtime/bin/thread_fuchsia.cc
@@ -290,7 +290,12 @@ Monitor::WaitResult Monitor::WaitMicros(int64_t micros) {
   Monitor::WaitResult retval = kNotified;
   if (micros == kNoTimeout) {
     // Wait forever.
-    int result = pthread_cond_wait(data_.cond(), data_.mutex());
+    int result;
+    do {
+      result = pthread_cond_wait(data_.cond(), data_.mutex());
+      // TODO(MG-795): Disallow ETIMEDOUT when pthread_cond_wait() can no longer
+      // return it.
+    } while (result == ETIMEDOUT);
     VALIDATE_PTHREAD_RESULT(result);
   } else {
     struct timespec ts;