Enable ThreadChecker in non-debug builds if DCHECK_ALWAYS_ON is

base/message_pump_libevent_unittest.cc

Index: base/message_pump_libevent_unittest.cc
diff --git a/base/message_pump_libevent_unittest.cc b/base/message_pump_libevent_unittest.cc
index 9ec78de587d31f73ca4873a02713e4380fd91826..92531fd67d0ec28dfa9a61f76d3ed77cb7d0662c 100644
--- a/base/message_pump_libevent_unittest.cc
+++ b/base/message_pump_libevent_unittest.cc
@@ -59,7 +59,7 @@ class StupidWatcher : public MessagePumpLibevent::Watcher {
   virtual void OnFileCanWriteWithoutBlocking(int fd) {}
 };
 
-#if GTEST_HAS_DEATH_TEST
+#if GTEST_HAS_DEATH_TEST && !defined(NDEBUG)
 
 // Test to make sure that we catch calling WatchFileDescriptor off of the
 // wrong thread.
@@ -67,13 +67,13 @@ TEST_F(MessagePumpLibeventTest, TestWatchingFromBadThread) {
   MessagePumpLibevent::FileDescriptorWatcher watcher;
   StupidWatcher delegate;
 
-  ASSERT_DEBUG_DEATH(io_loop()->WatchFileDescriptor(
+  ASSERT_DEATH(io_loop()->WatchFileDescriptor(
       STDOUT_FILENO, false, MessageLoopForIO::WATCH_READ, &watcher, &delegate),
       "Check failed: "
       "watch_file_descriptor_caller_checker_.CalledOnValidThread()");
 }
 
-#endif  // GTEST_HAS_DEATH_TEST
+#endif  // GTEST_HAS_DEATH_TEST && !defined(NDEBUG)
 
 class DeleteWatcher : public MessagePumpLibevent::Watcher {
  public: