Minifying renamer for classes, methods and instance variables.

utils/compiler/build_helper.dart

Index: utils/compiler/build_helper.dart
diff --git a/utils/compiler/build_helper.dart b/utils/compiler/build_helper.dart
index 6821599be2391dbd4ca322476179aecac9c1aad4..4828b51cdd15732879a84f2dc1d3b09a3300dd88 100644
--- a/utils/compiler/build_helper.dart
+++ b/utils/compiler/build_helper.dart
@@ -29,19 +29,22 @@ main() {
   List<String> productionScript = buildScript(
       'dart2js-production',
       dartUri, dartVmUri,
-      'lib/compiler/implementation/dart2js.dart', '');
+      'lib/compiler/implementation/dart2js.dart',
+      '');
   writeScript(productionUri, productionScript);
 
   List<String> developerScript = buildScript(
       'dart2js-developer',
       dartUri, dartVmUri,
-      'lib/compiler/implementation/dart2js.dart', ' --enable_checked_mode');
+      'lib/compiler/implementation/dart2js.dart',
+      r' ${DART_VM_FLAGS:---enable_checked_mode}');
   writeScript(developerUri, developerScript);
 
   List<String> dartdocScript = buildScript(
       'dartdoc',
       dartUri, dartVmUri,
-      'pkg/dartdoc/bin/dartdoc.dart', '');
+      'pkg/dartdoc/bin/dartdoc.dart',
+      '');
   writeScript(dartdocUri, dartdocScript);
 }