Show the drop down menu on the screen the mouse cursor is on

chrome/browser/ui/views/toolbar/toolbar_button.cc

 // Copyright 2013 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 "chrome/browser/ui/views/toolbar/toolbar_button.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
@@ skipping 158 matching lines @@
 
   // Both the menu position and the menu anchor type change if the UI layout
   // is right-to-left.
   gfx::Point menu_position(lb.origin());
   menu_position.Offset(0, lb.height() - 1);
   if (base::i18n::IsRTL())
     menu_position.Offset(lb.width() - 1, 0);
 
   View::ConvertPointToScreen(this, &menu_position);
 
-#if defined(OS_WIN)
-  int left_bound = GetSystemMetrics(SM_XVIRTUALSCREEN);
-#elif defined(OS_CHROMEOS)
+#if defined(OS_CHROMEOS)
   // A window won't overlap between displays on ChromeOS.
   // Use the left bound of the display on which
   // the menu button exists.
   gfx::NativeView view = GetWidget()->GetNativeView();
   display::Display display =
       display::Screen::GetScreen()->GetDisplayNearestView(view);
   int left_bound = display.bounds().x();
 #else
   // The window might be positioned over the edge between two screens. We'll
   // want to position the dropdown on the screen the mouse cursor is on.
@@ skipping 38 matching lines @@
   if (state() != STATE_DISABLED)
     SetState(STATE_NORMAL);
 
   menu_runner_.reset();
   menu_model_adapter_.reset();
 }
 
 const char* ToolbarButton::GetClassName() const {
   return "ToolbarButton";
 }