CommandLine: add a CopySwitchesFrom() for copying from another CommandLine

chrome/browser/browser_uitest.cc

 // Copyright (c) 2006-2008 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 "base/file_path.h"
 #include "base/file_util.h"
 #include "base/string_util.h"
 #include "base/sys_info.h"
 #include "base/test/test_file_util.h"
 #include "base/values.h"
@@ skipping 257 matching lines @@
 public:
   void SetUp() {
     PathService::Get(base::DIR_TEMP, &tmp_profile_);
     tmp_profile_ = tmp_profile_.AppendASCII("tmp_profile");
     tmp_profile_ = tmp_profile_.Append(L"Test Chrome Géraldine");
 
     // Create a fresh, empty copy of this directory.
     file_util::Delete(tmp_profile_, true);
     file_util::CreateDirectory(tmp_profile_);
 
-    launch_arguments_.AppendSwitchWithValue(switches::kUserDataDir,
-                                            tmp_profile_.ToWStringHack());
+    launch_arguments_.AppendSwitchPath(switches::kUserDataDir, tmp_profile_);
   }
 
   bool LaunchAppWithProfile() {
     UITest::SetUp();
     return true;
   }
 
   void TearDown() {
     UITest::TearDown();
     EXPECT_TRUE(file_util::DieFileDie(tmp_profile_, true));
@@ skipping 57 matching lines @@
   ASSERT_TRUE(browser->RunCommand(IDC_CLOSE_WINDOW));
   ASSERT_TRUE(automation()->GetBrowserWindowCount(&window_count));
   EXPECT_EQ(0, window_count);
   ASSERT_TRUE(IsBrowserRunning());
   ASSERT_TRUE(automation()->OpenNewBrowserWindow(Browser::TYPE_NORMAL, true));
   ASSERT_TRUE(automation()->GetBrowserWindowCount(&window_count));
   EXPECT_EQ(1, window_count);
 }
 
 }  // namespace