| Index: sdk/lib/_internal/compiler/implementation/dart_backend/backend_ast_to_frontend_ast.dart
|
| diff --git a/sdk/lib/_internal/compiler/implementation/dart_backend/backend_ast_to_frontend_ast.dart b/sdk/lib/_internal/compiler/implementation/dart_backend/backend_ast_to_frontend_ast.dart
|
| index 20042370fb92725a6c17d303faec1d3881a52508..d641b54e7e86e5a68c3ef8a9c62175fe082cf932 100644
|
| --- a/sdk/lib/_internal/compiler/implementation/dart_backend/backend_ast_to_frontend_ast.dart
|
| +++ b/sdk/lib/_internal/compiler/implementation/dart_backend/backend_ast_to_frontend_ast.dart
|
| @@ -23,7 +23,8 @@ tree.FunctionExpression emit(dart2js.TreeElementMapping treeElements,
|
| /// If true, the unparser will insert a coment in front of every function
|
| /// it emits. This helps indicate which functions were translated by the new
|
| /// backend.
|
| -bool INSERT_NEW_BACKEND_COMMENT = false;
|
| +bool INSERT_NEW_BACKEND_COMMENT =
|
| + const bool.fromEnvironment('USE_NEW_BACKEND', defaultValue: false);
|
|
|
| /// Converts backend ASTs to frontend ASTs.
|
| class TreePrinter {
|
|
|