[chromedriver] Add option to relaunch the test harness after each java test for debugging.

chrome/test/chromedriver/test_expectations

Index: chrome/test/chromedriver/test_expectations
diff --git a/chrome/test/chromedriver/test_expectations b/chrome/test/chromedriver/test_expectations
index 6c591009f714822b515e8c2ee02bbdf67a2755cd..92dd84bbb49d7aa0c316a55a27e57e5bc43e74e6 100644
--- a/chrome/test/chromedriver/test_expectations
+++ b/chrome/test/chromedriver/test_expectations
@@ -177,3 +177,27 @@ def GetPassedJavaTestFilter(operating_system, chrome_version):
   """
   return '*-' + ':'.join(_OS_NEGATIVE_FILTER[operating_system] +
                          _REVISION_NEGATIVE_FILTER[chrome_version])
+
+def ApplyJavaTestFilter(operating_system, chrome_version, tests):
+  """Applies the test filter to the given list of tests.
+
+  Args:
+    operating_system: The operating system, one of 'linux', 'mac', 'win', or
+        'android'.
+    chrome_version: Chrome version to test against, e.g., 'HEAD' or '26'.
+    test: list of test names to filter.
+
+  Returns:
+    Set of passed test names.
+  """
+  filters = (_OS_NEGATIVE_FILTER[operating_system] +
+             _REVISION_NEGATIVE_FILTER[chrome_version])
+  passed = set(tests)
+  for f in filters:
+    passed.difference_update(set(t for t in tests if _TestMatchesFilter(t, f)))
+  return passed
+
+def _TestMatchesFilter(test, filter):
+  if '*' in filter:
+    return test[:len(filter) - 1] == test[:-1]
+  return test == filter