Disable ServiceWorkerBlackBoxBrowserTest.Registration on ChromeOS

content/browser/service_worker/service_worker_browsertest.cc

Index: content/browser/service_worker/service_worker_browsertest.cc
diff --git a/content/browser/service_worker/service_worker_browsertest.cc b/content/browser/service_worker/service_worker_browsertest.cc
index 28e6a099e6708a525e247489c28884c3fc08366f..3d8fe53391fadf67bcf1596c1357d000ba37eac5 100644
--- a/content/browser/service_worker/service_worker_browsertest.cc
+++ b/content/browser/service_worker/service_worker_browsertest.cc
@@ -861,7 +861,13 @@ static int CountRenderProcessHosts() {
   return result;
 }
 
-IN_PROC_BROWSER_TEST_F(ServiceWorkerBlackBoxBrowserTest, Registration) {
+// Flaky timeouts on CrOS: http://crbug.com/387045
+#if defined(OS_CHROMEOS)
+#define MAYBE_Registration DISABLED_Registration
+#else
+#define MAYBE_Registration Registration
+#endif
+IN_PROC_BROWSER_TEST_F(ServiceWorkerBlackBoxBrowserTest, MAYBE_Registration) {
   // Close the only window to be sure we're not re-using its RenderProcessHost.
   shell()->Close();
   EXPECT_EQ(0, CountRenderProcessHosts());