[Android] Use isolate remap instead of check.

build/android/pylib/base/base_test_runner.py

Index: build/android/pylib/base/base_test_runner.py
diff --git a/build/android/pylib/base/base_test_runner.py b/build/android/pylib/base/base_test_runner.py
index 3fb6c269c787b9888748890ab556ed77dc3349be..171e6fc3a318f554e9f06887cc8e7287d1b169b7 100644
--- a/build/android/pylib/base/base_test_runner.py
+++ b/build/android/pylib/base/base_test_runner.py
@@ -111,20 +111,6 @@ class BaseTestRunner(object):
     """Run once after all tests are run."""
     self.ShutdownHelperToolsForTestSuite()
 
-  def CopyTestData(self, test_data_paths, dest_dir):
-    """Copies |test_data_paths| list of files/directories to |dest_dir|.
-
-    Args:
-      test_data_paths: A list of files or directories relative to |dest_dir|
-          which should be copied to the device. The paths must exist in
-          |DIR_SOURCE_ROOT|.
-      dest_dir: Absolute path to copy to on the device.
-    """
-    for p in test_data_paths:
-      self.adb.PushIfNeeded(
-          os.path.join(constants.DIR_SOURCE_ROOT, p),
-          os.path.join(dest_dir, p))
-
   def LaunchTestHttpServer(self, document_root, port=None,
                            extra_config_contents=None):
     """Launches an HTTP server to serve HTTP tests.