Download the host components when user tries to enable Me2Me host.

remoting/webapp/remoting.js

Index: remoting/webapp/remoting.js
diff --git a/remoting/webapp/remoting.js b/remoting/webapp/remoting.js
index b0519c21a7b7d9e31f52b8356c6b1c835698b055..c94c6cb9f351f6b2660004f62700b24627e0fffd 100644
--- a/remoting/webapp/remoting.js
+++ b/remoting/webapp/remoting.js
@@ -150,6 +150,21 @@ function isIT2MeSupported_() {
   return !remoting.runningOnChromeOS();
 }
 
+// TODO(sergeyu): We want to show Me2Me host controls only on some Linux
+// distributions that we know work properly with the chromoting host. Implement
+// dome detection mechanism and apply it here.
+remoting.supportLinuxDistibutionDetected_ = false;

[Jamie, 2014/01/31 18:39:15]

s/support/supported/

[Sergey Ulanov, 2014/01/31 23:34:17]

Done.

+
+remoting.isMe2MeSupported = function isMe2MeSupported() {
+  var platform = navigator.platform;
+
+  // Currently Me2Me is supported on Windows, OSX and some versions of Linux.
+  return platform == "Win32" || platform == "MacIntel" ||
+           ((platform == "Linux x86_64" || platform == "Linux i386") &&
+            remoting.supportLinuxDistibutionDetected_ &&
+            !remoting.runningOnChromeOS());

[Jamie, 2014/01/31 18:39:15]

Does ChromeOS report itself as Linux? If so, then there's no need to check for
it explicitly--it will presumably be excluded by the
supportedLinuxDistributionDetected check.

[Sergey Ulanov, 2014/01/31 23:34:17]

Yes, ChromeOS reports itself as Linux (blink uses uname() for
navigator.platform, except on mac and windows). I think it's still better to
have this check explicitly here, for the future when we remove
remoting.supportLinuxDistibutionDetected_.

+}
+
 /**
  * Display the user's email address and allow access to the rest of the app,
  * including parsing URL parameters.