Make dart2js executable.

dart/utils/compiler/compiler.gyp

Index: dart/utils/compiler/compiler.gyp
diff --git a/dart/utils/compiler/compiler.gyp b/dart/utils/compiler/compiler.gyp
index d4b5505da52041925a1ae2deaa7292d932425650..ecccdaf9cd57873e38b226a97f948a50993adff7 100644
--- a/dart/utils/compiler/compiler.gyp
+++ b/dart/utils/compiler/compiler.gyp
@@ -10,30 +10,26 @@
       'dependencies': [
         '../../runtime/dart-runtime.gyp:dart',
       ],
-      'conditions': [
-        ['OS!="win"', {
-          'actions': [
-            {
-              'action_name': 'build_dart2js',
-              'inputs': [
-                '<(PRODUCT_DIR)/dart',
-                'build_helper.dart',
-              ],
-              'outputs': [
-                '<(PRODUCT_DIR)/dart2js',
-                '<(PRODUCT_DIR)/dart2js_developer',
-              ],
-                  'action': [
-                    '<(PRODUCT_DIR)/dart',
-                    'build_helper.dart',
-                    '<(PRODUCT_DIR)',
-                    'dart',
-                    'dart2js',
-                    'dart2js_developer',
-                  ],
-            },
+      'actions': [
+        {
+          'action_name': 'build_dart2js',
+          'inputs': [
+            '<(PRODUCT_DIR)/dart',
+            'build_helper.dart',
           ],
-        }],
+          'outputs': [
+            '<(PRODUCT_DIR)/dart2js',
+            '<(PRODUCT_DIR)/dart2js_developer',
+          ],
+          'action': [
+            '<(PRODUCT_DIR)/dart',
+            'build_helper.dart',
+            '<(PRODUCT_DIR)',
+            'dart',
+            'dart2js',
+            'dart2js_developer',
+          ],
+        },
       ],
     },
   ],