Revert "cps-ir: Support foreign code."

pkg/compiler/lib/src/js_backend/codegen/codegen.dart

Index: pkg/compiler/lib/src/js_backend/codegen/codegen.dart
diff --git a/pkg/compiler/lib/src/js_backend/codegen/codegen.dart b/pkg/compiler/lib/src/js_backend/codegen/codegen.dart
index 8fcf8ab924ee7f276522cac2e8b55a62f7fdb52d..0e7f886e1fc01d176db999cf028411bee2f2da84 100644
--- a/pkg/compiler/lib/src/js_backend/codegen/codegen.dart
+++ b/pkg/compiler/lib/src/js_backend/codegen/codegen.dart
@@ -617,7 +617,7 @@ class CodeGenerator extends tree_ir.StatementVisitor
     js.Expression argumentNames = new js.ArrayInitializer(
         node.selector.namedArguments.map(js.string).toList(growable: false));
     return buildStaticHelperInvocation(glue.createInvocationMirrorMethod,
-        <js.Expression>[name, internalName, kind, arguments, argumentNames]);
+        [name, internalName, kind, arguments, argumentNames]);
   }
 
   @override
@@ -703,21 +703,6 @@ class CodeGenerator extends tree_ir.StatementVisitor
     return glue.generateTypeRepresentation(node.dartType, arguments);
   }
 
-  js.Node handleForeignCode(tree_ir.ForeignCode node) {
-    registry.registerStaticUse(node.dependency);
-    return node.codeTemplate.instantiate(visitExpressionList(node.arguments));
-  }
-
-  @override
-  js.Expression visitForeignExpression(tree_ir.ForeignExpression node) {
-    return handleForeignCode(node);
-  }
-
-  @override
-  visitForeignStatement(tree_ir.ForeignStatement node) {
-    return handleForeignCode(node);
-  }
-
   @override
   js.Expression visitApplyBuiltinOperator(tree_ir.ApplyBuiltinOperator node) {
     List<js.Expression> args = visitExpressionList(node.arguments);