Chrome OS should open to empty desktop when session restore is empty.

chrome/browser/policy/policy_browsertest.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 <algorithm>
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 35 matching lines @@
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/omnibox/location_bar.h"
 #include "chrome/browser/ui/omnibox/omnibox_edit_model.h"
 #include "chrome/browser/ui/omnibox/omnibox_view.h"
 #include "chrome/browser/ui/tab_contents/tab_contents.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/chrome_notification_types.h"
+#include "chrome/common/chrome_switches.h"
 #include "chrome/common/content_settings.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/browser_child_process_host_iterator.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 1135 matching lines @@
 // created. Each test parameter is a method that sets up the early policies
 // and stores the expected startup URLs in |expected_urls_|.
 class RestoreOnStartupPolicyTest
     : public PolicyTest,
       public testing::WithParamInterface<
           void (RestoreOnStartupPolicyTest::*)(void)> {
  public:
   RestoreOnStartupPolicyTest() {}
   virtual ~RestoreOnStartupPolicyTest() {}
 
+#if defined(OS_CHROMEOS)
+  virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
+    // TODO(nkostylev): Investigate if we can remove this switch.
+    command_line->AppendSwitch(switches::kCreateBrowserOnStartupForTests);
+    PolicyTest::SetUpCommandLine(command_line);
+  }
+#endif
+
   virtual void SetUpInProcessBrowserTestFixture() OVERRIDE {
     PolicyTest::SetUpInProcessBrowserTestFixture();
     // Set early policies now, before the browser is created.
     (this->*(GetParam()))();
 
     // Remove the non-switch arguments, so that session restore kicks in for
     // these tests.
     CommandLine* command_line = CommandLine::ForCurrentProcess();
     CommandLine::StringVector argv = command_line->argv();
     argv.erase(std::remove_if(++argv.begin(), argv.end(), IsNonSwitchArgument),
@@ skipping 108 matching lines @@
 INSTANTIATE_TEST_CASE_P(
     RestoreOnStartupPolicyTestInstance,
     RestoreOnStartupPolicyTest,
     testing::Values(&RestoreOnStartupPolicyTest::HomepageIsNotNTP,
                     &RestoreOnStartupPolicyTest::HomepageIsNTP,
                     &RestoreOnStartupPolicyTest::ListOfURLs,
                     &RestoreOnStartupPolicyTest::NTP,
                     &RestoreOnStartupPolicyTest::Last));
 
 }  // namespace policy