[android] Instumentation tests determine whether to install test apk based on Md5Sum.

build/android/pylib/host_driven/run_python_tests.py

 # Copyright (c) 2012 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 the Python tests (relies on using the Java test runner)."""
 
 import logging
 import os
 import sys
 import types
@@ skipping 70 matching lines @@
 
   test_names = [t.qualified_name for t in available_tests]
   logging.debug('Final list of tests to run: ' + str(test_names))
 
   # Copy files to each device before running any tests.
   for device_id in attached_devices:
     logging.debug('Pushing files to device %s', device_id)
     test_pkg = test_package.TestPackage(options.test_apk_path,
                                         options.test_apk_jar_path)
     test_files_copier = test_runner.TestRunner(
-        options.build_type, options.test_data, options.install_apk,
-        options.save_perf_json, options.screenshot_failures, options.tool,
-        options.wait_for_debugger, options.disable_assertions,
-        options.push_deps, options.cleanup_test_files, device_id, 0, test_pkg,
-        [])
+        options.build_type, options.test_data, options.save_perf_json,
+        options.screenshot_failures, options.tool, options.wait_for_debugger,
+        options.disable_assertions, options.push_deps,
+        options.cleanup_test_files, device_id, 0, test_pkg, [])
     test_files_copier.InstallTestPackage()
     if options.push_deps:
       logging.info('Pushing data deps to device.')
       test_files_copier.PushDataDeps()
     else:
       logging.warning('Skipping pushing data deps to device.')
 
   # Actually run the tests.
   if len(attached_devices) > 1 and options.wait_for_debugger:
     logging.warning('Debugger can not be sharded, '
@@ skipping 106 matching lines @@
   Returns:
     List of test case objects for all available test methods.
   """
   if not test_root:
     return []
   all_tests = []
   test_module_list = _GetTestModules(test_root, is_official_build)
   for module in test_module_list:
     all_tests.extend(_GetTestClassesFromModule(module))
   return all_tests