Remove GetOutputNames from x11_util

ui/base/x/x11_util.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_BASE_X_X11_UTIL_H_
 #define UI_BASE_X_X11_UTIL_H_
 
 // This file declares utility functions for X11 (Linux only).
 //
 // These functions do not require the Xlib headers to be included (which is why
@@ skipping 285 matching lines @@
                                      uint16* manufacturer_id,
                                      uint16* product_code,
                                      std::string* human_readable_name);
 
 // Parses |prop| as EDID data and stores the overscan flag to |flag|. Returns
 // true if the flag is found. This is exported for x11_util_unittest.cc.
 UI_EXPORT bool ParseOutputOverscanFlag(const unsigned char* prop,
                                        unsigned long nitems,
                                        bool* flag);
 
-// Gets the name of outputs given by |output_ids|.
-UI_EXPORT std::vector<std::string> GetOutputNames(
-    const std::vector<XID>& output_ids);
-
 enum WindowManagerName {
   WM_UNKNOWN,
   WM_BLACKBOX,
   WM_CHROME_OS,
   WM_COMPIZ,
   WM_ENLIGHTENMENT,
   WM_ICE_WM,
   WM_KWIN,
   WM_METACITY,
   WM_MUTTER,
@@ skipping 84 matching lines @@
  private:
   ::Cursor cursor_;
   Display* display_;
 
   DISALLOW_COPY_AND_ASSIGN(XScopedCursor);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_X_X11_UTIL_H_