Add systemwide session file for Chromoting

remoting/host/linux/linux_me2me_host.py

Index: remoting/host/linux/linux_me2me_host.py
diff --git a/remoting/host/linux/linux_me2me_host.py b/remoting/host/linux/linux_me2me_host.py
index 42a954704952b34c702289ae7ea15434083bcaee..d398e5239930e54228d3ca1406e320cdcd389253 100755
--- a/remoting/host/linux/linux_me2me_host.py
+++ b/remoting/host/linux/linux_me2me_host.py
@@ -56,6 +56,7 @@ CHROME_REMOTING_GROUP_NAME = "chrome-remote-desktop"
 HOME_DIR = os.environ["HOME"]
 CONFIG_DIR = os.path.join(HOME_DIR, ".config/chrome-remote-desktop")
 SESSION_FILE_PATH = os.path.join(HOME_DIR, ".chrome-remote-desktop-session")
+SYSTEM_SESSION_FILE_PATH = "/etc/chrome-remote-desktop-session"
 
 X_LOCK_FILE_TEMPLATE = "/tmp/.X%d-lock"
 FIRST_X_DISPLAY_NUMBER = 20
@@ -537,7 +538,8 @@ def choose_x_session():
   XSESSION_FILES = [
     SESSION_FILE_PATH,
     "~/.xsession",
-    "~/.Xsession" ]
+    "~/.Xsession",
+    SYSTEM_SESSION_FILE_PATH ]

[Sergey Ulanov, 2014/04/23 22:41:52]

Maybe put this above .xsession? (it has higher change of working properly)

[Lambros, 2014/04/23 23:04:13]

I'd like to get rid of .xsession completely. Modern Linux distros don't use
these files any more, so these files are typically remnants from older systems
and often don't work properly when people set up Chromoting for the first time.
WDYT?

[Sergey Ulanov, 2014/04/24 00:10:21]

sgtm

[Lambros, 2014/04/24 20:27:52]

Done.

   for startup_file in XSESSION_FILES:
     startup_file = os.path.expanduser(startup_file)
     if os.path.exists(startup_file):