When launching crosh process set TERM var to be 'xterm'

chrome/browser/chromeos/process_proxy/process_proxy.cc

Index: chrome/browser/chromeos/process_proxy/process_proxy.cc
diff --git a/chrome/browser/chromeos/process_proxy/process_proxy.cc b/chrome/browser/chromeos/process_proxy/process_proxy.cc
index ead1377fe9f8a5e190c2dc1c60c8d7142add21bf..98ac0c008f8c198ca27687e425def525264318ac 100644
--- a/chrome/browser/chromeos/process_proxy/process_proxy.cc
+++ b/chrome/browser/chromeos/process_proxy/process_proxy.cc
@@ -216,6 +216,10 @@ bool ProcessProxy::LaunchProcess(const std::string& command, int slave_fd,
   options.fds_to_remap = &fds_mapping;
   options.ctrl_terminal_fd = slave_fd;
 
+  base::EnvironmentVector environ;
+  environ.push_back(std::make_pair("TERM", "xterm"));
+  options.environ = &environ;
+
   // Launch the process.
   return base::LaunchProcess(CommandLine(base::FilePath(command)), options,
                              pid);