[win8] Force browsers created with Chrome in Metro mode to be on the Ash desktop.

chrome/browser/ui/browser_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 "chrome/browser/ui/browser.h"
 
+#include "ash/shell.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/win/metro.h"
 #include "chrome/browser/bookmarks/bookmark_utils.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
 #include "chrome/browser/ui/fullscreen/fullscreen_controller.h"
 #include "win8/util/win8_util.h"
 
@@ skipping 26 matching lines @@
     }
   } else {
     NewEmptyWindow(profile, host_desktop_type);
   }
 }
 
 }  // namespace
 
 namespace chrome {
 
+HostDesktopType GetVerifiedHostDesktopForBrowser(HostDesktopType desktop_type) {
+  if (ash::Shell::HasInstance())
+    return chrome::HOST_DESKTOP_TYPE_ASH;
+
+  return desktop_type;
+}
+
 void NewWindow(Browser* browser) {
   NewWindowMaybeMetro(browser, browser->profile()->GetOriginalProfile());
 }
 
 void NewIncognitoWindow(Browser* browser) {
   NewWindowMaybeMetro(browser, browser->profile()->GetOffTheRecordProfile());
 }
 
 }  // namespace chrome
 
 void Browser::SetMetroSnapMode(bool enable) {
   fullscreen_controller_->SetMetroSnapMode(enable);
 }