Set the scale factor for the display on Windows when in high-DPI mode.

ui/gfx/screen_win.cc

 // 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_win.h"
 
 #include <windows.h>
 
 #include "base/logging.h"
+#include "ui/base/win/dpi.h"
 #include "ui/gfx/display.h"
 
 namespace {
 
 MONITORINFO GetMonitorInfoForMonitor(HMONITOR monitor) {
   MONITORINFO monitor_info = { 0 };
   monitor_info.cbSize = sizeof(monitor_info);
   GetMonitorInfo(monitor, &monitor_info);
   return monitor_info;
 }
 
 gfx::Display GetDisplay(MONITORINFO& monitor_info) {
   // TODO(oshima): Implement ID and Observer.
-  gfx::Display display(0, gfx::Rect(monitor_info.rcMonitor));
+  gfx::Rect bounds = gfx::Rect(monitor_info.rcMonitor);
+  gfx::Display display(0, bounds);
   display.set_work_area(gfx::Rect(monitor_info.rcWork));
+  display.SetScaleAndBounds(ui::win::GetDeviceScaleFactor(), bounds);
   return display;
 }
 
 }  // namespace
 
 namespace gfx {
 
 ScreenWin::ScreenWin() {
 }
 
@@ skipping 96 matching lines @@
 #endif  // USE_AURA
 }
 
 #if !defined(USE_AURA)
 Screen* CreateNativeScreen() {
   return new ScreenWin;
 }
 #endif  // !USE_AURA
 
 }  // namespace gfx