Revert "cps-ir: Support foreign code."

pkg/compiler/lib/src/cps_ir/cps_ir_builder.dart

Index: pkg/compiler/lib/src/cps_ir/cps_ir_builder.dart
diff --git a/pkg/compiler/lib/src/cps_ir/cps_ir_builder.dart b/pkg/compiler/lib/src/cps_ir/cps_ir_builder.dart
index 0ad583b63fea40de141cac19c182adf719375ce4..155831b43420f501edc578f5d8746e372e781438 100644
--- a/pkg/compiler/lib/src/cps_ir/cps_ir_builder.dart
+++ b/pkg/compiler/lib/src/cps_ir/cps_ir_builder.dart
@@ -20,10 +20,6 @@ import 'cps_ir_nodes.dart' as ir;
 import 'cps_ir_builder_task.dart' show DartCapturedVariables,
     GlobalProgramInformation;
 
-import '../common.dart' as types show TypeMask;
-import '../js/js.dart' as js show Template;
-import '../native/native.dart' show NativeBehavior;
-
 /// A mapping from variable elements to their compile-time values.
 ///
 /// Map elements denoted by parameters and local variables to the
@@ -2415,27 +2411,6 @@ class JsIrBuilder extends IrBuilder {
     return addPrimitive(new ir.CreateInvocationMirror(selector, arguments));
   }
 
-  ir.Primitive buildForeignCode(js.Template codeTemplate,
-                                List<ir.Primitive> arguments,
-                                NativeBehavior behavior,
-                                {Element dependency}) {
-    types.TypeMask type = program.getTypeMaskForForeign(behavior);
-    if (codeTemplate.isExpression) {
-      return _continueWithExpression((k) => new ir.ForeignCode(
-        codeTemplate,
-        type,
-        arguments,
-        behavior,
-        continuation: k,
-        dependency: dependency));
-    } else {
-      assert(isOpen);
-      add(new ir.ForeignCode(codeTemplate, type, arguments, behavior,
-          dependency: dependency));
-      _current = null;
-    }
-  }
-
   @override
   ir.Primitive buildTypeOperator(ir.Primitive value,
                                  DartType type,