Remove proxy-related environment variables when running standalone tests

tools/testing/dart/test_runner.dart

Index: tools/testing/dart/test_runner.dart
diff --git a/tools/testing/dart/test_runner.dart b/tools/testing/dart/test_runner.dart
index 8d0de275e2f38dafee253fa16c91949f6f48a909..a168dd7138896fc88a4d6bf5395c16db4f1204f6 100644
--- a/tools/testing/dart/test_runner.dart
+++ b/tools/testing/dart/test_runner.dart
@@ -33,6 +33,10 @@ typedef void TestCaseEvent(TestCase testCase);
 typedef void ExitCodeEvent(int exitCode);
 typedef void EnqueueMoreWork(ProcessQueue queue);
 
+const List<String> EXCLUDED_ENVIRONMENT_VARIABLES =

[ricow1, 2013/04/12 14:39:09]

Please add a statement here as to why we do this

+    const ['http_proxy', 'https_proxy', 'no_proxy',
+           'HTTP_PROXY', 'HTTPS_PROXY', 'NO_PROXY'];
+
 
 /**
  * [areByteArraysEqual] compares a range of bytes from [buffer1] with a
@@ -1022,6 +1026,11 @@ class RunningProcess {
     options.environment = new Map<String, String>.from(baseEnvironment);
     options.environment['DART_CONFIGURATION'] =
         TestUtils.configurationDir(testCase.configuration);
+
+    for (var excludedEnvironmentVariable in EXCLUDED_ENVIRONMENT_VARIABLES) {
+      options.environment.remove(excludedEnvironmentVariable);
+    }
+
     return options;
   }
 }