Fix rebaseline tool to use "git cl land" instead of "git cl dcommit".

third_party/WebKit/Tools/Scripts/webkitpy/tool/commands/rebaseline.py

 # Copyright (c) 2010 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 856 matching lines @@
             # takes a long time and sometimes fails, but we don't want to commit if, e.g. the
             # tree is closed.
             did_finish = self._run_git_cl_command(options, ['upload', '-f'])
 
             if did_finish:
                 # Uploading can take a very long time. Do another pull to make sure TestExpectations is up to date,
                 # so the dcommit can go through.
                 # FIXME: Log the pull and dcommit stdout/stderr to the log-server.
                 tool.executive.run_command(['git', 'pull'])
 
-                self._run_git_cl_command(options, ['dcommit', '-f'])
+                self._run_git_cl_command(options, ['land', '-f', '-v'])
         except:
             traceback.print_exc(file=sys.stderr)
         finally:
             if did_finish:
                 # Close the issue if dcommit failed.
                 issue_already_closed = tool.executive.run_command(
                     ['git', 'config', 'branch.%s.rietveldissue' % rebaseline_branch_name],
                     return_exit_code=True)
                 if not issue_already_closed:
                     self._run_git_cl_command(options, ['set_close'])
@@ skipping 77 matching lines @@
                 self._tool.scm().checkout_branch(old_branch_name_or_ref)
         else:
             self._log_queue.put(self.QUIT_LOG)
         log_thread.join()
 
     def execute(self, options, args, tool):
         self._verbose = options.verbose
         while True:
             self._do_one_rebaseline()
             time.sleep(self.SLEEP_TIME_IN_SECONDS)