Fix for issue 11680

runtime/lib/integers.dart

Index: runtime/lib/integers.dart
===================================================================
--- runtime/lib/integers.dart	(revision 25486)
+++ runtime/lib/integers.dart	(working copy)
@@ -273,9 +273,7 @@
       return 0;
     }
   }
-  int _shlFromInt(int other) {
-    throw const OutOfMemoryError();
-  }
+  int _shlFromInt(int other) native "Mint_shlFromInt";
 }
 
 // A number that can be represented as Smi or Mint will never be represented as
@@ -298,9 +296,7 @@
       return 0;
     }
   }
-  int _shlFromInt(int other) {
-    throw const OutOfMemoryError();
-  }
+  int _shlFromInt(int other) native "Bigint_shlFromInt";
 
   int pow(int exponent) {
     throw "Bigint.pow not implemented";