Disable ipc_mojo_unittests that timeout on Android.

ipc/mojo/ipc_mojo_bootstrap_unittest.cc

Index: ipc/mojo/ipc_mojo_bootstrap_unittest.cc
diff --git a/ipc/mojo/ipc_mojo_bootstrap_unittest.cc b/ipc/mojo/ipc_mojo_bootstrap_unittest.cc
index 65d216f82119da5d0db020e6f3db274bc463a7e7..26cc6acc8f3d1ec835f1d4cbd3bb415689562503 100644
--- a/ipc/mojo/ipc_mojo_bootstrap_unittest.cc
+++ b/ipc/mojo/ipc_mojo_bootstrap_unittest.cc
@@ -42,7 +42,13 @@ void TestingDelegate::OnBootstrapError() {
   base::MessageLoop::current()->Quit();
 }
 
-TEST_F(IPCMojoBootstrapTest, Connect) {
+// Times out on Android; see http://crbug.com/502290
+#if defined(OS_ANDROID)
+#define MAYBE_Connect DISABLED_Connect
+#else
+#define MAYBE_Connect Connect
+#endif
+TEST_F(IPCMojoBootstrapTest, MAYBE_Connect) {
   Init("IPCMojoBootstrapTestClient");
 
   TestingDelegate delegate;