Add audioonly playground test. Move common things to dep.

client/site_tests/realtimecomm_GTalkAudioPlayground/control

Index: client/site_tests/realtimecomm_GTalkAudioPlayground/control
diff --git a/client/site_tests/realtimecomm_GTalkAudioPlayground/control b/client/site_tests/realtimecomm_GTalkAudioPlayground/control
new file mode 100755
index 0000000000000000000000000000000000000000..0dfbfcb2bd9bd8e6a8028357da3e5defc964d2e8
--- /dev/null
+++ b/client/site_tests/realtimecomm_GTalkAudioPlayground/control
@@ -0,0 +1,16 @@
+# Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+AUTHOR = "Chrome OS Team"
+NAME = "realtimecomm_GTalkPlayground"
+TIME = "MEDIUM"
+TEST_CATEGORY = "GTalk"
+TEST_CLASS = "realtimecomm"
+TEST_TYPE = "client"
+
+DOC = """
+This tests Google Talk Plugin Audio
+"""
+
+job.run_test('realtimecomm_GTalkAudioPlayground')