skydb shouldn't use origin on Linux

sky/tools/skydb

 #!/usr/bin/env python
 # Copyright 2014 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.
 
 from skypy.skyserver import SkyServer
 import argparse
 import json
 import logging
 import os
@@ skipping 100 matching lines @@
 
         if args.url_or_path:
             shell_args.append(
                 '--args-for=mojo:window_manager %s' % self._url_from_args(args))
 
         # Map all mojo: urls to http: urls using the --origin command.
         build_dir_url = SkyServer.url_for_path(
             remote_server_port,
             self.pids['sky_server_root'],
             self.pids['build_dir'])
-        shell_args += ['--origin=%s' % build_dir_url]
+
+        # TODO(eseidel): We should do this on linux, but we need to fix
+        # mojo http loading to be faster first.
+        if is_android:
+            shell_args += ['--origin=%s' % build_dir_url]
 
         # Desktop-only work-around for mojo crashing under chromoting.
         if not is_android and args.use_osmesa:
             shell_args.append(
                 '--args-for=mojo:native_viewport_service --use-osmesa')
 
         if is_android and args.gdb:
             shell_args.append('--wait-for-debugger')
 
         if 'remote_sky_server_port' in self.pids:
@@ skipping 55 matching lines @@
 
         sky_server = self.sky_server_for_args(args)
         self.pids['sky_server_pid'] = sky_server.start()
         self.pids['sky_server_port'] = sky_server.port
         self.pids['sky_server_root'] = sky_server.root
 
         self.pids['build_dir'] = self.paths.build_dir
         self.pids['sky_command_port'] = args.command_port
 
         if is_android:
+            # TODO(eseidel): This should move into a helper method and handle
+            # failures with nice messages explaining how to get root.
             subprocess.check_call([ADB_PATH, 'root'])
 
             # We could make installing conditional on an argument.
             apk_path = os.path.join(self.paths.build_dir, 'apks',
                 ANDROID_APK_NAME)
             subprocess.check_call([ADB_PATH, 'install', '-r', apk_path])
 
             port_string = 'tcp:%s' % sky_server.port
             subprocess.check_call([
                 ADB_PATH, 'reverse', port_string, port_string
@@ skipping 387 matching lines @@
         load_parser.set_defaults(func=self.load_command)
 
         args = parser.parse_args()
         args.func(args)
 
         self._write_pid_file(PID_FILE_PATH, self.pids)
 
 
 if __name__ == '__main__':
     SkyDebugger().main()