Add option to push files to device using isolate for instrumentation tests.

build/android/pylib/base/base_test_runner.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.
 
 """Base class for running tests on a single device."""
 
 # TODO(jbudorick) Deprecate and remove this class and all subclasses after
 # any relevant parts have been ported to the new environment + test instance
 # model.
 
@@ skipping 55 matching lines @@
     Returns:
       Tuple containing:
         (base_test_result.TestRunResults, tests to rerun or None)
     """
     raise NotImplementedError
 
   def InstallTestPackage(self):
     """Installs the test package once before all tests are run."""
     pass
 
-  def PushDataDeps(self):
-    """Push all data deps to device once before all tests are run."""
-    pass
-
   def SetUp(self):
     """Run once before all tests are run."""
     self.InstallTestPackage()
-    self.PushDataDeps()
 
   def TearDown(self):
     """Run once after all tests are run."""
     self.ShutdownHelperToolsForTestSuite()
     if self._cleanup_test_files:
       self.device.old_interface.RemovePushedFiles()
 
   def LaunchTestHttpServer(self, document_root, port=None,
                            extra_config_contents=None):
     """Launches an HTTP server to serve HTTP tests.
@@ skipping 87 matching lines @@
         break
       else:
         error_msgs.append(error_msg)
       self._spawning_server.Stop()
       # Wait for 2 seconds then restart.
       time.sleep(2)
     if not server_ready:
       logging.error(';'.join(error_msgs))
       raise Exception('Can not start the test spawner server.')
     self._PushTestServerPortInfoToDevice()