Don't require `--origin` when running on Android anymore.

If one doesn't use `mojo:` urls there is no need for `--origin`, see
issue #356.

R=etiennej@chromium.org

Review URL: https://codereview.chromium.org/1282863002 .

Cr-Mirrored-From: https://github.com/domokit/mojo
Cr-Mirrored-Commit: 49366ecba96be573ae4eec53e9f75262258264d5

devtoolslib/android_shell.py

diff --git a/devtoolslib/android_shell.py b/devtoolslib/android_shell.py
index e07ce77..f5a1fa8 100644
--- a/devtoolslib/android_shell.py
+++ b/devtoolslib/android_shell.py
@@ -279,9 +279,7 @@
     """Starts the mojo shell, passing it the given arguments.
 
     Args:
-      arguments: List of arguments for the shell. It must contain the
-          "--origin=" arg. shell_arguments.configure_local_origin() can be used
-          to set up a local directory on the host machine as origin.
+      arguments: List of arguments for the shell.
       stdout: Valid argument for subprocess.Popen() or None.
     """
     if not self.stop_shell_registered:
@@ -310,8 +308,6 @@
       else:
         _logger.warning("Running without root access, full stdout of the "
                         "shell won't be available.")
-    # The origin has to be specified whether it's local or external.
-    assert any("--origin=" in arg for arg in arguments)
     parameters.extend(arguments)
 
     if parameters: