Ensure that data doesn't leak between users on cros chrome crash.

chrome/browser/process_singleton_win.cc

 // Copyright (c) 2009 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 "app/l10n_util.h"
 #include "app/win_util.h"
 #include "base/base_paths.h"
 #include "base/command_line.h"
@@ skipping 246 matching lines @@
     }
 
     // Get command line.
     const std::wstring cmd_line =
       msg.substr(second_null + 1, third_null - second_null);
 
     CommandLine parsed_command_line = CommandLine::FromString(cmd_line);
     PrefService* prefs = g_browser_process->local_state();
     DCHECK(prefs);
 
-    FilePath user_data_dir;
-    PathService::Get(chrome::DIR_USER_DATA, &user_data_dir);
-    ProfileManager* profile_manager = g_browser_process->profile_manager();
-    Profile* profile = profile_manager->GetDefaultProfile(user_data_dir);
+    Profile* profile = ProfileManager::GetDefaultProfile();
     if (!profile) {
       // We should only be able to get here if the profile already exists and
       // has been created.
       NOTREACHED();
       return TRUE;
     }
 
     // Run the browser startup sequence again, with the command line of the
     // signalling process.
     BrowserInit::ProcessCommandLine(parsed_command_line, cur_dir, false,
                                     profile, NULL);
     return TRUE;
   }
   return TRUE;
 }
 
 LRESULT CALLBACK ProcessSingleton::WndProc(HWND hwnd, UINT message,
                                            WPARAM wparam, LPARAM lparam) {
   switch (message) {
     case WM_COPYDATA:
       return OnCopyData(reinterpret_cast<HWND>(wparam),
                         reinterpret_cast<COPYDATASTRUCT*>(lparam));
     default:
       break;
   }
 
   return ::DefWindowProc(hwnd, message, wparam, lparam);
 }