Add GetDisplayWithDisplayId to display::Screen.

ui/display/screen.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_DISPLAY_SCREEN_H_
 #define UI_DISPLAY_SCREEN_H_
 
 #include <vector>
 
 #include "base/macros.h"
@@ skipping 70 matching lines @@
   // If |view| is null, the primary display is used as the context.
   virtual gfx::Rect ScreenToDIPRectInWindow(gfx::NativeView view,
                                             const gfx::Rect& screen_rect) const;
 
   // Converts |dip_rect| to screen coordinates in the context of |view| clamping
   // to the enclosing rect if the coordinates do not fall on pixel boundaries.
   // If |view| is null, the primary display is used as the context.
   virtual gfx::Rect DIPToScreenRectInWindow(gfx::NativeView view,
                                             const gfx::Rect& dip_rect) const;
 
+  // Returns true if the display with |display_id| is found and returns that
+  // display in |display|. Otherwise returns false and |display| remains
+  // untouched.
+  bool GetDisplayWithDisplayId(int64_t display_id,
+                               display::Display* display) const;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(Screen);
 };
 
 Screen* CreateNativeScreen();
 
 }  // namespace display
 
 #endif  // UI_DISPLAY_SCREEN_H_