Suppress timing-out tests on android content_shell.

tests/lib/lib.status

Index: tests/lib/lib.status
diff --git a/tests/lib/lib.status b/tests/lib/lib.status
index 1b856dfe89285d0572202f3a61f0d2874ac0e745..c98f12136a7803448177ccccdb382a8475be4b29 100644
--- a/tests/lib/lib.status
+++ b/tests/lib/lib.status
@@ -8,6 +8,10 @@ mirrors/regress_16321_test/01: CompileTimeError # Issue 16351
 [ $checked && $compiler == none && ($runtime == dartium || $runtime == drt) ]
 mirrors/regress_16321_test/01: RunTimeError # Issue 16351
 
+[ $runtime == ContentShellOnAndroid ]
+mirrors/deferred_mirrors_metadata_test: Skip # Times out. Issue 19127
+mirrors/deferred_mirrors_metatarget_test: Skip # Times out. Issue 19127
+
 [ $compiler == dart2js && $checked && $runtime == ie9 ]
 convert/ascii_test: Skip # http://dartbug.com/15498
 convert/streamed_conversion_json_utf8_encode_test: Skip # http://dartbug.com/15498