android: Add 4 new linker tests.

build/android/pylib/linker/test_runner.py

 # Copyright 2013 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.
 
 """Runs linker tests on a particular device."""
 
 import logging
 import os.path
 import sys
 import time
@@ skipping 62 matching lines @@
       raise Exception('%s not found, please build it' % apk_path)
 
     package_name = apk_helper.GetPackageName(apk_path)
     self.adb.ManagedInstall(apk_path, package_name)
 
   #override
   def RunTest(self, test):
     """Sets up and runs a test case.
 
     Args:
-      test: An object which is ostensibly a subclass of LinkerTestCase.
+      test: An object which is ostensibly a subclass of LinkerTestCaseBase.
 
     Returns:
       A TestRunResults object which contains the result produced by the test
       and, in the case of a failure, the test that should be retried.
     """
 
-    assert isinstance(test, test_case.LinkerTestCase)
+    assert isinstance(test, test_case.LinkerTestCaseBase)
 
     try:
       results = test.Run(self.device)
     except Exception:
       logging.exception('Caught exception while trying to run test: ' +
                         test.tagged_name)
       exc_info = sys.exc_info()
       results = base_test_result.TestRunResults()
       results.AddResult(LinkerExceptionTestResult(
           test.tagged_name, exc_info))
 
     if not results.DidRunPass():
       return results, test
     else:
       return results, None