Add dex2oat watch dog thread for host builds

Change-Id: I90b4b6b3a1aebb82955b4aa84d3f2d599af1d13b
diff --git a/src/thread_list.cc b/src/thread_list.cc
index 43a0cee..1a2fd47 100644
--- a/src/thread_list.cc
+++ b/src/thread_list.cc
@@ -207,7 +207,7 @@
       // Shouldn't need to wait for longer than 1 millisecond.
       const uint64_t threshold = 1;
       if (NsToMs(end - start) > threshold) {
-        LOG(INFO) << "Warning: waited longer than " << threshold << " ms for thrad suspend"
+        LOG(INFO) << "Warning: waited longer than " << threshold << " ms for thread suspend"
                   << std::endl;
       }
     }