Implement "presentation" feature for window.open()

ui/gfx/screen_mac.mm

 // 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.
 
 #include "ui/gfx/screen.h"
 
 #import <ApplicationServices/ApplicationServices.h>
 #import <Cocoa/Cocoa.h>
 
 #include <map>
@@ skipping 28 matching lines @@
       max_area = area;
       max_screen = screen;
     }
   }
 
   return max_screen;
 }
 
 gfx::Display GetDisplayForScreen(NSScreen* screen) {
   NSRect frame = [screen frame];
-  // TODO(oshima): Implement ID and Observer.
-  gfx::Display display(0, gfx::Rect(NSRectToCGRect(frame)));
+  // TODO(oshima): Implement Observer.
+
+  int64 displayId = [[[screen deviceDescription]
+    objectForKey:@"NSScreenNumber"] intValue];
+  gfx::Display display(displayId, gfx::Rect(NSRectToCGRect(frame)));
 
   NSRect visible_frame = [screen visibleFrame];
   NSScreen* primary = [[NSScreen screens] objectAtIndex:0];
 
   // Convert work area's coordinate systems.
   if ([screen isEqual:primary]) {
     gfx::Rect work_area = gfx::Rect(NSRectToCGRect(visible_frame));
     work_area.set_y(frame.size.height - visible_frame.origin.y -
                     visible_frame.size.height);
     display.set_work_area(work_area);
@@ skipping 146 matching lines @@
 
 }  // namespace
 
 namespace gfx {
 
 Screen* CreateNativeScreen() {
   return new ScreenMac;
 }
 
 }