Support map and list literals in analyzer2dart.

sdk/lib/_internal/compiler/implementation/cps_ir/cps_ir_builder.dart

Index: sdk/lib/_internal/compiler/implementation/cps_ir/cps_ir_builder.dart
diff --git a/sdk/lib/_internal/compiler/implementation/cps_ir/cps_ir_builder.dart b/sdk/lib/_internal/compiler/implementation/cps_ir/cps_ir_builder.dart
index 850ff3ccfdc70f262d7dddbc88b3efea366644f5..90e40c9fdebac0c6d2b650584461b1501483aec7 100644
--- a/sdk/lib/_internal/compiler/implementation/cps_ir/cps_ir_builder.dart
+++ b/sdk/lib/_internal/compiler/implementation/cps_ir/cps_ir_builder.dart
@@ -370,6 +370,28 @@ class IrBuilder {
         state.constantSystem.createString(new ast.DartString.literal(value)));
   }
 
+  /// Creates a non-constant list literal of the provided [type] and with the
+  /// provided [values].
+  ir.Primitive buildListLiteral(InterfaceType type,
+                                Iterable<ir.Primitive> values) {
+    assert(isOpen);
+    ir.Primitive result = new ir.LiteralList(type, values);
+    add(new ir.LetPrim(result));
+    return result;
+  }
+
+  /// Creates a non-constant map literal of the provided [type] and with the
+  /// provided [keys] and corresponding [values].
+  ir.Primitive buildMapLiteral(InterfaceType type,
+                               Iterable<ir.Primitive> keys,
+                               Iterable<ir.Primitive> values) {
+    assert(isOpen);
+    assert(keys.length == values.length);
+    ir.Primitive result = new ir.LiteralMap(type, keys, values);
+    add(new ir.LetPrim(result));
+    return result;
+  }
+
   /// Creates a conditional expression with the provided [condition] where the
   /// then and else expression are created through the [buildThenExpression] and
   /// [buildElseExpression] functions, respectively.