Treat displays with and without EDID the same way

ui/display/chromeos/x11/display_snapshot_x11.h

 // Copyright 2014 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_DISPLAY_CHROMEOS_X11_DISPLAY_SNAPSHOT_X11_H_
 #define UI_DISPLAY_CHROMEOS_X11_DISPLAY_SNAPSHOT_X11_H_
 
 #include "ui/display/display_export.h"
 #include "ui/display/types/display_snapshot.h"
 
 // Forward declare from Xlib and Xrandr.
 typedef unsigned long XID;
 typedef XID RROutput;
 typedef XID RRCrtc;
 
 namespace ui {
 
 class DISPLAY_EXPORT DisplaySnapshotX11 : public DisplaySnapshot {
  public:
   DisplaySnapshotX11(int64_t display_id,
-                     bool has_proper_display_id,
                      const gfx::Point& origin,
                      const gfx::Size& physical_size,
                      DisplayConnectionType type,
                      bool is_aspect_preserving_scaling,
                      bool has_overscan,
                      std::string display_name,
                      const std::vector<const DisplayMode*>& modes,
                      const DisplayMode* current_mode,
                      const DisplayMode* native_mode,
                      RROutput output,
@@ skipping 18 matching lines @@
   // This output's index in the array returned by XRandR. Stable even as
   // outputs are connected or disconnected.
   int index_;
 
   DISALLOW_COPY_AND_ASSIGN(DisplaySnapshotX11);
 };
 
 }  // namespace ui
 
 #endif  // UI_DISPLAY_CHROMEOS_X11_DISPLAY_SNAPSHOT_X11_H_