Disables flaky test.

chrome/test/interactive_ui/fast_shutdown_interactive_uitest.cc

Index: chrome/test/interactive_ui/fast_shutdown_interactive_uitest.cc
diff --git a/chrome/test/interactive_ui/fast_shutdown_interactive_uitest.cc b/chrome/test/interactive_ui/fast_shutdown_interactive_uitest.cc
index 665988066c3fb3bbeaa64e7a97d11d09f69ea096..2e22b199fc166300eddd83d67710e764ea5eecba 100644
--- a/chrome/test/interactive_ui/fast_shutdown_interactive_uitest.cc
+++ b/chrome/test/interactive_ui/fast_shutdown_interactive_uitest.cc
@@ -27,6 +27,9 @@ class FastShutdown : public UITest {
 #if defined(OS_MACOSX)
 // SimulateOSClick is broken on the Mac: http://crbug.com/45162
 #define MAYBE_SlowTermination DISABLED_SlowTermination
+#elif defined(OS_CHROMEOS)
+// Flaky on chromeos: http://crbug.com/89173
+#define MAYBE_SlowTermination FLAKY_SlowTermination
 #else
 #define MAYBE_SlowTermination SlowTermination
 #endif