Adding ability to stream windows and inject events to them

remoting/host/host_main.cc

Index: remoting/host/host_main.cc
diff --git a/remoting/host/host_main.cc b/remoting/host/host_main.cc
index cd6705a660aa427fe6a5b06fd0af0bfd27e2f5d4..403ff64f03a048e4143b126e191035d0a53b5be6 100644
--- a/remoting/host/host_main.cc
+++ b/remoting/host/host_main.cc
@@ -76,7 +76,9 @@ const char kUsageMessage[] =
   "  --host-config=<config>   - Specifies the host configuration.\n"
   "  --help, -?               - Print this message.\n"
   "  --type                   - Specifies process type.\n"
-  "  --version                - Prints the host version and exits.\n";
+  "  --version                - Prints the host version and exits.\n"
+  "  --window-id=<id>         - Specifies a window to remote,"
+                                " instead of the whole desktop.\n";
 
 void Usage(const base::FilePath& program_name) {
   printf(kUsageMessage, program_name.MaybeAsASCII().c_str());