Enable hidpi on Linux, refactor a bit on Windows to share

win8/metro_driver/chrome_app_view_ash.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 "win8/metro_driver/stdafx.h"
 #include "win8/metro_driver/chrome_app_view_ash.h"
 
 #include <corewindow.h>
 #include <shellapi.h>
 #include <windows.foundation.h>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/message_loop/message_loop.h"
 #include "base/path_service.h"
 #include "base/win/metro.h"
 #include "base/win/win_util.h"
 #include "base/win/windows_version.h"
 #include "chrome/common/chrome_switches.h"
 #include "ipc/ipc_channel.h"
 #include "ipc/ipc_channel_proxy.h"
 #include "ipc/ipc_sender.h"
 #include "ui/events/gesture_detection/motion_event.h"
+#include "ui/gfx/dpi.h"
 #include "ui/gfx/geometry/point_conversions.h"
-#include "ui/gfx/win/dpi.h"
 #include "ui/metro_viewer/metro_viewer_messages.h"
 #include "win8/metro_driver/file_picker_ash.h"
 #include "win8/metro_driver/ime/ime_popup_monitor.h"
 #include "win8/metro_driver/ime/input_source.h"
 #include "win8/metro_driver/ime/text_service.h"
 #include "win8/metro_driver/metro_driver.h"
 #include "win8/metro_driver/winrt_utils.h"
 #include "win8/viewer/metro_viewer_constants.h"
 
 typedef winfoundtn::ITypedEventHandler<
@@ skipping 1434 matching lines @@
   mswr::ComPtr<winapp::Core::ICoreApplicationExit> app_exit;
   CheckHR(core_app.As(&app_exit));
   globals.app_exit = app_exit.Detach();
 }
 
 IFACEMETHODIMP
 ChromeAppViewFactory::CreateView(winapp::Core::IFrameworkView** view) {
   *view = mswr::Make<ChromeAppViewAsh>().Detach();
   return (*view) ? S_OK :  E_OUTOFMEMORY;
 }