Make credential_path a page attribute instead of page_set attribute.

tools/telemetry/telemetry/util/classes_unittest.py

Index: tools/telemetry/telemetry/util/classes_unittest.py
diff --git a/tools/telemetry/telemetry/util/classes_unittest.py b/tools/telemetry/telemetry/util/classes_unittest.py
new file mode 100644
index 0000000000000000000000000000000000000000..87173682de429b9497a13715aafc999ee54de912
--- /dev/null
+++ b/tools/telemetry/telemetry/util/classes_unittest.py
@@ -0,0 +1,45 @@
+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import unittest
+
+from telemetry.util import classes
+
+
+class ClassWithoutInitDefOne: # pylint: disable=W0232
+  pass
+
+
+class ClassWithoutInitDefTwo(object):
+  pass
+
+
+class ClassWhoseInitOnlyHasSelf(object):
+  def __init__(self):
+    pass
+
+
+class ClassWhoseInitWithDefaultArguments(object):
+  def __init__(self, dog=1, cat=None, cow=None, fud='a'):
+    pass
+
+
+class ClassWhoseInitWithDefaultArgumentsAndNonDefaultArguments(object):
+  def __init__(self, x, dog=1, cat=None, fish=None, fud='a'):
+    pass
+
+
+class ClassesUnitTest(unittest.TestCase):
+
+  def testIsDirectlyConstructableReturnsTrue(self):
+    self.assertTrue(classes.IsDirectlyConstructable(ClassWithoutInitDefOne))
+    self.assertTrue(classes.IsDirectlyConstructable(ClassWithoutInitDefTwo))
+    self.assertTrue(classes.IsDirectlyConstructable(ClassWhoseInitOnlyHasSelf))
+    self.assertTrue(
+        classes.IsDirectlyConstructable(ClassWhoseInitWithDefaultArguments))
+
+  def testIsDirectlyConstructableReturnsFalse(self):
+    self.assertFalse(
+        classes.IsDirectlyConstructable(
+            ClassWhoseInitWithDefaultArgumentsAndNonDefaultArguments))