Support constructor invocation 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 30a79830e105bd36f6a00d22b382d176c11e45f7..8190a705b9afd6a247bfc72a2764916512ee3105 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
@@ -491,7 +491,7 @@ class IrBuilder {
 
   }
 
-  /// Create a dynamic invocation on [receiver] with method name and arguments
+  /// Create a dynamic invocation on [receiver] with method name and argument
   /// structure defined by [selector] and argument values defined by
   /// [arguments].
   ir.Primitive buildDynamicInvocation(ir.Definition receiver,
@@ -502,7 +502,7 @@ class IrBuilder {
         (k) => new ir.InvokeMethod(receiver, selector, k, arguments));
   }
 
-  /// Create a static invocation of [element] with arguments structure defined
+  /// Create a static invocation of [element] with argument structure defined
   /// by [selector] and argument values defined by [arguments].
   ir.Primitive buildStaticInvocation(Element element,
                                      Selector selector,
@@ -511,6 +511,18 @@ class IrBuilder {
         (k) => new ir.InvokeStatic(element, selector, k, arguments));
   }
 
+  /// Create a constructor invocation of [element] on [type] with argument
+  /// structure defined by [selector] and argument values defined by
+  /// [arguments].
+  ir.Primitive buildConstructorInvocation(FunctionElement element,
+                                         Selector selector,
+                                         DartType type,
+                                         List<ir.Definition> arguments) {
+    assert(isOpen);
+    return continueWithExpression(
+        (k) => new ir.InvokeConstructor(type, element, selector, k, arguments));
+  }
+
   /// Creates an if-then-else statement with the provided [condition] where the
   /// then and else branches are created through the [buildThenPart] and
   /// [buildElsePart] functions, respectively.