[Remoting Linux] Allow native messaging host to specify host config path

remoting/host/setup/daemon_controller_delegate_linux.cc

Index: remoting/host/setup/daemon_controller_delegate_linux.cc
diff --git a/remoting/host/setup/daemon_controller_delegate_linux.cc b/remoting/host/setup/daemon_controller_delegate_linux.cc
index d18492b13922540af1c4053967ac732df34ae4e4..db9b3933e85a894b988a9d236dfa6490553334f9 100644
--- a/remoting/host/setup/daemon_controller_delegate_linux.cc
+++ b/remoting/host/setup/daemon_controller_delegate_linux.cc
@@ -37,7 +37,15 @@ namespace {
 const char kDaemonScript[] =
     "/opt/google/chrome-remote-desktop/chrome-remote-desktop";
 
+// The name of the command-line switch used to specify the host configuration
+// file to use.
+const char kHostConfigSwitchName[] = "host-config";
+
 base::FilePath GetConfigPath() {
+  base::CommandLine* current_process = base::CommandLine::ForCurrentProcess();

[Sergey Ulanov, 2016/12/16 22:22:11]

This code runs in native messaging host. How are you going to pass command-line
flag to native messaging host process?

+  if (current_process->HasSwitch(kHostConfigSwitchName)) {
+    return current_process->GetSwitchValuePath(kHostConfigSwitchName);
+  }
   std::string filename =
       "host#" + base::MD5String(net::GetHostName()) + ".json";
   base::FilePath homedir;