Remove GetOutputNames from x11_util

ui/base/x/x11_util.cc

Index: ui/base/x/x11_util.cc
diff --git a/ui/base/x/x11_util.cc b/ui/base/x/x11_util.cc
index ad590977dbc80ddb9b893613c8ba9fcd3cc7523a..994c9c70dd59ddd94434eb21f43283355c0bf2c5 100644
--- a/ui/base/x/x11_util.cc
+++ b/ui/base/x/x11_util.cc
@@ -1488,23 +1488,6 @@ bool ParseOutputOverscanFlag(const unsigned char* prop,
   return false;
 }
 
-std::vector<std::string> GetOutputNames(const std::vector<XID>& output_ids) {
-  std::vector<std::string> names;
-  Display* display = GetXDisplay();
-  Window root_window = DefaultRootWindow(display);
-  XRRScreenResources* screen_resources =
-      XRRGetScreenResources(display, root_window);
-  for (std::vector<XID>::const_iterator iter = output_ids.begin();
-       iter != output_ids.end(); ++iter) {
-    XRROutputInfo* output =
-        XRRGetOutputInfo(display, screen_resources, *iter);
-    names.push_back(std::string(output->name));
-    XRRFreeOutputInfo(output);
-  }
-  XRRFreeScreenResources(screen_resources);
-  return names;
-}
-
 bool GetWindowManagerName(std::string* wm_name) {
   DCHECK(wm_name);
   int wm_window = 0;