Ensure that Metro chrome in ASH is able to connect to an existing desktop chrome AURA process.

chrome/browser/process_singleton_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/process_singleton.h"
 
 #include <shellapi.h>
 #include <shobjidl.h>
 
 #include "base/base_paths.h"
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/path_service.h"
 #include "base/process_util.h"
 #include "base/stringprintf.h"
 #include "base/utf_string_conversions.h"
 #include "base/win/metro.h"
 #include "base/win/registry.h"
 #include "base/win/scoped_com_initializer.h"
 #include "base/win/scoped_comptr.h"
 #include "base/win/scoped_handle.h"
 #include "base/win/win_util.h"
 #include "base/win/windows_version.h"
 #include "base/win/wrapped_window_proc.h"
+#include "chrome/browser/browser_process.h"
 #include "chrome/browser/shell_integration.h"
 #include "chrome/browser/ui/simple_message_box.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_paths_internal.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/installer/util/browser_distribution.h"
 #include "chrome/installer/util/install_util.h"
 #include "chrome/installer/util/shell_util.h"
 #include "chrome/installer/util/wmi.h"
@@ skipping 326 matching lines @@
     ::UnregisterClass(chrome::kMessageWindowClass,
                       base::GetModuleFromAddress(&ThunkWndProc));
   }
   if (lock_file_ != INVALID_HANDLE_VALUE)
     CloseHandle(lock_file_);
 }
 
 ProcessSingleton::NotifyResult ProcessSingleton::NotifyOtherProcess() {
   if (is_virtualized_)
     return PROCESS_NOTIFIED;  // We already spawned the process in this case.
-  if (lock_file_ == INVALID_HANDLE_VALUE && !remote_window_)
+  if (lock_file_ == INVALID_HANDLE_VALUE && !remote_window_) {
     return LOCK_ERROR;
-  else if (!remote_window_)
+  } else if (!remote_window_) {
+    g_browser_process->PlatformSpecificCommandLineProcessing(
+        *CommandLine::ForCurrentProcess());
     return PROCESS_NONE;
+  }
 
   DWORD process_id = 0;
   DWORD thread_id = GetWindowThreadProcessId(remote_window_, &process_id);
   // It is possible that the process owning this window may have died by now.
   if (!thread_id || !process_id) {
     remote_window_ = NULL;
     return PROCESS_NONE;
   }
 
   if (base::win::IsMetroProcess()) {
@@ skipping 152 matching lines @@
   switch (message) {
     case WM_COPYDATA:
       return OnCopyData(reinterpret_cast<HWND>(wparam),
                         reinterpret_cast<COPYDATASTRUCT*>(lparam));
     default:
       break;
   }
 
   return ::DefWindowProc(hwnd, message, wparam, lparam);
 }