Skip tests that time out on IE.

frog/tests/leg_only/leg_only.status

Index: frog/tests/leg_only/leg_only.status
diff --git a/frog/tests/leg_only/leg_only.status b/frog/tests/leg_only/leg_only.status
index 29a14bdf4745752aff67f8e95052f1b527e39d2e..6d7ac4da03aa6f21763a9f7ed98444fb6fc41d46 100644
--- a/frog/tests/leg_only/leg_only.status
+++ b/frog/tests/leg_only/leg_only.status
@@ -7,12 +7,10 @@ class_test: Fail
 statements_test: Fail
 typed_locals_test: Fail
 
-
 [ $mode == debug ]
 operator_test: Skip
 string_interpolation_test: Skip
 
-
 [ $compiler == frog ]
 *: Skip
 
@@ -27,3 +25,21 @@ cascade_precedence_test: Fail
 
 [ $compiler == dart2js && $runtime == ff ]
 *: Skip # Issue 2615
+
+[ $compiler == dart2js && $runtime == ie ]
+12_test: Skip # BUG(3304): Times out.
+33_test: Skip # BUG(3304): Times out.
+43_test: Skip # BUG(3304): Times out.
+7_test: Skip # BUG(3304): Times out.
+bailout_test: Skip # BUG(3304): Times out.
+class_test: Skip # BUG(3304): Times out.
+equals_test: Skip # BUG(3304): Times out.
+foo7_test: Skip # BUG(3304): Times out.
+function_parameters_test: Skip # BUG(3304): Times out.
+literals_test: Skip # BUG(3304): Times out.
+locals_test: Skip # BUG(3304): Times out.
+not_equals_test: Skip # BUG(3304): Times out.
+phi_test: Skip # BUG(3304): Times out.
+regression_2913_test: Skip # BUG(3304): Times out.
+send_test: Skip # BUG(3304): Times out.
+to_string_test: Skip # BUG(3304): Times out.