Handle int/double case expression types correctly.

sdk/lib/_internal/compiler/implementation/ssa/builder.dart

Index: sdk/lib/_internal/compiler/implementation/ssa/builder.dart
diff --git a/sdk/lib/_internal/compiler/implementation/ssa/builder.dart b/sdk/lib/_internal/compiler/implementation/ssa/builder.dart
index 12be2f687abdea5f1bd82487b3ae575be137cba5..72665295e4841351759b8e604360f1866d0fffbd 100644
--- a/sdk/lib/_internal/compiler/implementation/ssa/builder.dart
+++ b/sdk/lib/_internal/compiler/implementation/ssa/builder.dart
@@ -4432,15 +4432,6 @@ class SsaBuilder extends ResolvedVisitor implements Visitor {
                   MessageKind.SWITCH_CASE_VALUE_OVERRIDES_EQUALS);
               failure = true;
             }
-          } else {
-            DartType constantType =
-                constant.computeType(compiler);
-            if (constantType != firstConstantType) {
-              compiler.reportFatalError(
-                  match.expression,
-                  MessageKind.SWITCH_CASE_TYPES_NOT_EQUAL);
-              failure = true;
-            }
           }
           constants[labelOrCase] = constant;
         }