Introduce WPTServe for running W3C Blink Layout tests

Tools/Scripts/webkitpy/layout_tests/servers/server_base.py

Index: Tools/Scripts/webkitpy/layout_tests/servers/server_base.py
diff --git a/Tools/Scripts/webkitpy/layout_tests/servers/server_base.py b/Tools/Scripts/webkitpy/layout_tests/servers/server_base.py
index 1d6a3e1138acf6b5700861b71c0977076879dba1..0914b6e37b5581213d78b742d05a4c7b2290f1cf 100644
--- a/Tools/Scripts/webkitpy/layout_tests/servers/server_base.py
+++ b/Tools/Scripts/webkitpy/layout_tests/servers/server_base.py
@@ -72,8 +72,10 @@ class ServerBase(object):
 
         # Subclasses may override these fields.
         self._env = None
+        self._cwd = None
         self._stdout = self._executive.PIPE
         self._stderr = self._executive.PIPE
+        self._keep_process_reference = False
         self._process = None

[Dirk Pranke, 2015/06/15 23:41:48]

This seems a bit off; we actually define a self._process in the base class, but
only set it in apache_http.

Can we set it in the base class and then not need keep_process_reference?

[burnik, 2015/06/16 09:24:34]

Done. Hope it doesn't break anything... 

         self._pid = None
         self._error_log_path = None
@@ -162,7 +164,14 @@ class ServerBase(object):
 
     def _spawn_process(self):
         _log.debug('Starting %s server, cmd="%s"' % (self._name, self._start_cmd))
-        process = self._executive.popen(self._start_cmd, env=self._env, stdout=self._stdout, stderr=self._stderr)
+        process = self._executive.popen(self._start_cmd,
+                                        env=self._env,
+                                        cwd=self._cwd,
+                                        stdout=self._stdout,
+                                        stderr=self._stderr)
+        if self._keep_process_reference:
+            self._process = process
+
         pid = process.pid
         self._filesystem.write_text_file(self._pid_file, str(pid))
         return pid