Convert a bunch of easy AppendSwitchWithValue to *ASCII.

chrome/test/tab_switching/tab_switching_test.cc

 // Copyright (c) 2010 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/command_line.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/platform_thread.h"
 #include "base/time.h"
@@ skipping 156 matching lines @@
   }
 
   FilePath path_prefix_;
   FilePath log_file_name_;
   scoped_refptr<BrowserProxy> browser_proxy_;
 
  private:
   void AddLaunchArguments() {
     launch_arguments_.AppendSwitch(switches::kEnableLogging);
     launch_arguments_.AppendSwitch(switches::kDumpHistogramsOnExit);
-    launch_arguments_.AppendSwitchWithValue(switches::kLoggingLevel, "0");
+    launch_arguments_.AppendSwitchASCII(switches::kLoggingLevel, "0");
   }
 
   DISALLOW_COPY_AND_ASSIGN(TabSwitchingUITest);
 };
 
 #if defined(OS_WIN)
 // Started failing with a webkit roll in r49936. See http://crbug.com/46751
 #define MAYBE_TabSwitch FAILS_TabSwitch
 #else
 #define MAYBE_TabSwitch TabSwitch
 #endif
 
 TEST_F(TabSwitchingUITest, MAYBE_TabSwitch) {
   RunTabSwitchingUITest("t", true);
 }
 
 TEST_F(TabSwitchingUITest, TabSwitchRef) {
   UseReferenceBuild();
   RunTabSwitchingUITest("t_ref", true);
 }
 
 }  // namespace