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

chrome/test/automation/automation_proxy_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 <string>
 
 #include "app/app_switches.h"
 #include "app/message_box_flags.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
@@ skipping 27 matching lines @@
 using ui_test_utils::TimedMessageLoopRunner;
 using testing::CreateFunctor;
 using testing::StrEq;
 using testing::_;
 
 class AutomationProxyTest : public UITest {
  protected:
   AutomationProxyTest() {
     dom_automation_enabled_ = true;
     launch_arguments_.AppendSwitchWithValue(switches::kLang,
-                                            L"en-US");
+                                            "en-US");
   }
 };
 
 TEST_F(AutomationProxyTest, GetBrowserWindowCount) {
   int window_count = 0;
   EXPECT_TRUE(automation()->GetBrowserWindowCount(&window_count));
   EXPECT_EQ(1, window_count);
 #ifdef NDEBUG
   ASSERT_FALSE(automation()->GetBrowserWindowCount(NULL));
 #endif
@@ skipping 1429 matching lines @@
 
   // Allow some time for the popup to show up and close.
   PlatformThread::Sleep(sleep_timeout_ms());
 
   std::wstring expected(L"string");
   std::wstring jscript = CreateJSString(L"\"" + expected + L"\"");
   std::wstring actual;
   ASSERT_TRUE(tab->ExecuteAndExtractString(L"", jscript, &actual));
   ASSERT_EQ(expected, actual);
 }