Use XDamage in Virtual Me2Me.

remoting/host/remoting_me2me_host.cc

Index: remoting/host/remoting_me2me_host.cc
diff --git a/remoting/host/remoting_me2me_host.cc b/remoting/host/remoting_me2me_host.cc
index 65a32817bbad256b636e84b2b654cc7b49eee0bb..8a10c7b317d143e2e0d50ed3e42e85c7255c10ad 100644
--- a/remoting/host/remoting_me2me_host.cc
+++ b/remoting/host/remoting_me2me_host.cc
@@ -21,6 +21,7 @@
 #include "build/build_config.h"
 #include "crypto/nss_util.h"
 #include "remoting/base/constants.h"
+#include "remoting/host/capturer.h"
 #include "remoting/host/chromoting_host.h"
 #include "remoting/host/chromoting_host_context.h"
 #include "remoting/host/desktop_environment.h"
@@ -67,6 +68,10 @@ class HostProcess {
     } else {
       host_config_path_ = default_config_dir.Append(kDefaultHostConfigFile);
     }
+
+#if defined(OS_LINUX)
+    Capturer::EnableXDamage(true);
+#endif
   }
 
   int Run() {