Lift restrictions for browser test to pass.

tools/testing/dart/test_runner.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /**
  * Classes and methods for executing tests.
  *
  * This module includes:
  * - Managing parallel execution of tests, including timeout checks.
  * - Evaluating the output of each test as pass/fail/crash/timeout.
@@ skipping 296 matching lines @@
         // If we get the X server error, or DRT crashes with a core dump, retry
         // the test.
         if (testCase.dynamic.numRetries > 0) {
           requestRetry = true;
         }
         return true;
       }
     }
 
     // Browser tests fail unless stdout contains
-    // 'Content-Type: text/plain\nPASS'.
-    String previous_line = '';
+    // 'Content-Type: text/plain' followed by 'PASS'.
+    bool has_content_type = false;
     for (String line in super.stdout) {
-      if (line == 'PASS' && previous_line == 'Content-Type: text/plain') {
-        return (exitCode != 0 && !hasCrashed);
+      switch (line) {
+        case 'Content-Type: text/plain':
+          has_content_type = true;
+          break;
+
+        case 'PASS':
+          if (has_content_type) {
+            return (exitCode != 0 && !hasCrashed);
+          }
       }
-      previous_line = line;
     }
     return true;
   }
 }
 
 // The static analyzer does not actually execute code, so
 // the criteria for success now depend on the text sent
 // to stderr.
 class AnalysisTestOutputImpl extends TestOutputImpl {
   // An error line has 8 fields that look like:
@@ skipping 800 matching lines @@
         // the developer doesn't waste his or her time trying to fix a bunch of
         // tests that appear to be broken but were actually just flakes that
         // didn't get retried because there had already been one failure.
         bool allowRetry = _MAX_FAILED_NO_RETRY > _progress.numFailedTests;
         new RunningProcess(test, allowRetry, this).start();
       }
       _numProcesses++;
     }
   }
 }