Make Chrome built for Chrome OS works on Linux with --stub-cros

chrome/browser/browser_main.cc

 // Copyright (c) 2011 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/browser_main.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 1183 matching lines @@
     browser_defaults::enable_help_app = false;
 
   scoped_ptr<BrowserMainParts>
       parts(BrowserMainParts::CreateBrowserMainParts(parameters));
 
   parts->EarlyInitialization();
 
   // Must happen before we try to use a message loop or display any UI.
   InitializeToolkit(parameters);
 
+#if defined(OS_CHROMEOS)
+  // Stub out chromeos implementations. We need to do as early as possible
+  // because it is initialized on first use when it is initialized
+  // SetUseStubImpl doesn't do anything.
+  if (parameters.command_line_.HasSwitch(switches::kStubCros))
+    chromeos::CrosLibrary::Get()->GetTestApi()->SetUseStubImpl();
+#endif
+
   parts->MainMessageLoopStart();
 
   // WARNING: If we get a WM_ENDSESSION, objects created on the stack here
   // are NOT deleted. If you need something to run during WM_ENDSESSION add it
   // to browser_shutdown::Shutdown or BrowserProcess::EndSession.
 
   // !!!!!!!!!! READ ME !!!!!!!!!!
   // I (viettrungluu) am in the process of refactoring |BrowserMain()|. If you
   // need to add something above this comment, read the documentation in
   // browser_main.h. If you need to add something below, please do the
@@ skipping 309 matching lines @@
   }
 #endif
 
 #if defined(USE_X11)
   SetBrowserX11ErrorHandlers();
 #endif
 
   // Profile creation ----------------------------------------------------------
 
 #if defined(OS_CHROMEOS)
-  // Stub out chromeos implementations.
-  if (parsed_command_line.HasSwitch(switches::kStubCros))
-    chromeos::CrosLibrary::Get()->GetTestApi()->SetUseStubImpl();
-
   // Initialize the screen locker now so that it can receive
   // LOGIN_USER_CHANGED notification from UserManager.
   chromeos::ScreenLocker::InitClass();
 
   // This forces the ProfileManager to be created and register for the
   // notification it needs to track the logged in user.
   g_browser_process->profile_manager();
 
   // TODO(abarth): Should this move to InitializeNetworkOptions()?
   // Allow access to file:// on ChromeOS for tests.
@@ skipping 402 matching lines @@
 #if defined(OS_CHROMEOS)
   // To be precise, logout (browser shutdown) is not yet done, but the
   // remaining work is negligible, hence we say LogoutDone here.
   chromeos::BootTimesLoader::Get()->AddLogoutTimeMarker("LogoutDone",
                                                         false);
   chromeos::BootTimesLoader::Get()->WriteLogoutTimes();
 #endif
   TRACE_EVENT_END_ETW("BrowserMain", 0, 0);
   return result_code;
 }