Add a basic configuration (gclient sync + build) for pagespeed.

scripts/master/factory/pagespeed_commands.py

Index: scripts/master/factory/pagespeed_commands.py
===================================================================
--- scripts/master/factory/pagespeed_commands.py	(revision 0)
+++ scripts/master/factory/pagespeed_commands.py	(revision 0)
@@ -0,0 +1,20 @@
+# Copyright (c) 2010 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.
+
+"""Set of utilities to add commands to a buildbot factory.
+
+This is based on commands.py and adds pagespeed-specific commands."""
+
+import config
+
+from master.factory import commands
+
+class PageSpeedCommands(commands.FactoryCommands):
+  """Encapsulates methods to add chromium commands to a buildbot factory."""
+
+  def __init__(self, factory=None, identifier=None, target=None,
+               build_dir=None, target_platform=None):
+
+    commands.FactoryCommands.__init__(self, factory, identifier,
+                                      target, build_dir, target_platform)