Remove deprecated CommandLine(std::wstring) ctor.

chrome/app/chrome_main_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 "chrome/test/ui/ui_test.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "net/base/net_util.h"
 
@@ skipping 26 matching lines @@
   EXPECT_EQ(1, window_count);
 
   EXPECT_EQ(1, GetTabCount());
 }
 
 // Make sure that the second invocation creates a new window.
 TEST_F(ChromeMainTest, SecondLaunch) {
   include_testing_id_ = false;
   use_existing_browser_ = true;
 
-  ASSERT_TRUE(LaunchAnotherBrowserBlockUntilClosed(CommandLine(L"")));
+  ASSERT_TRUE(LaunchAnotherBrowserBlockUntilClosed(
+                  CommandLine(CommandLine::ARGUMENTS_ONLY)));
 
   ASSERT_TRUE(automation()->WaitForWindowCountToBecome(2, action_timeout_ms()));
 }
 
 TEST_F(ChromeMainTest, ReuseBrowserInstanceWhenOpeningFile) {
   include_testing_id_ = false;
   use_existing_browser_ = true;
 
   FilePath test_file = test_data_directory_.AppendASCII("empty.html");
 
-  CommandLine command_line(L"");
+  CommandLine command_line(CommandLine::ARGUMENTS_ONLY);
   command_line.AppendLooseValue(test_file.ToWStringHack());
-
   ASSERT_TRUE(LaunchAnotherBrowserBlockUntilClosed(command_line));
 
   ASSERT_TRUE(automation()->IsURLDisplayed(net::FilePathToFileURL(test_file)));
 }