"Reverting 14829-14832"

utils/testrunner/layout_test_controller.dart

Index: utils/testrunner/layout_test_controller.dart
diff --git a/utils/testrunner/layout_test_controller.dart b/utils/testrunner/layout_test_controller.dart
index 986e6681cbe9e39943862372e5141d3c6490c60c..8dedf11d1874bc8b451b1afe8216629d617eeca7 100644
--- a/utils/testrunner/layout_test_controller.dart
+++ b/utils/testrunner/layout_test_controller.dart
@@ -164,7 +164,7 @@ runTextLayoutTest(testNum) {
           var expectedFileName =
               '$sourceDir${Platform.pathSeparator}'
               '${label.replaceAll("###", "_")
-                      .replaceAll(new RegExp("[^A-Za-z0-9]"),"_")}.txt';
+                      .replaceAll(const RegExp("[^A-Za-z0-9]"),"_")}.txt';
           var expected = new File(expectedFileName);
           if (regenerate) {
             var ostream = expected.openOutputStream(FileMode.WRITE);
@@ -260,7 +260,7 @@ runPixelLayoutTest(int testNum) {
           var expectedFileName =
               '$sourceDir${Platform.pathSeparator}'
               '${label.replaceAll("###","_").
-                       replaceAll(new RegExp("[^A-Za-z0-9]"),"_")}.png';
+                       replaceAll(const RegExp("[^A-Za-z0-9]"),"_")}.png';
           var expected = new File(expectedFileName);
           if (regenerate) {
             var ostream = expected.openOutputStream(FileMode.WRITE);