Make callers of CommandLine use it via the base:: namespace.

ppapi/proxy/ppp_messaging_proxy_perftest.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 "base/command_line.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/test/perf_time_logger.h"
 #include "ppapi/c/ppp_messaging.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/proxy/ppapi_proxy_test.h"
@@ skipping 38 matching lines @@
 };
 
 }  // namespace
 
 // Tests the performance of sending strings through the proxy.
 TEST_F(PppMessagingPerfTest, StringPerformance) {
   const PP_Instance kTestInstance = pp_instance();
   int seed = 123;
   int string_count = 1000;
   int max_string_size = 1000000;
-  CommandLine* command_line = CommandLine::ForCurrentProcess();
+  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   if (command_line) {
     if (command_line->HasSwitch("seed")) {
       base::StringToInt(command_line->GetSwitchValueASCII("seed"),
                         &seed);
     }
     if (command_line->HasSwitch("string_count")) {
       base::StringToInt(command_line->GetSwitchValueASCII("string_count"),
                         &string_count);
     }
     if (command_line->HasSwitch("max_string_size")) {
@@ skipping 14 matching lines @@
         ppapi::proxy::SerializedVarSendInput(host().host_dispatcher(),
                                              host_string)));
     handle_message_called.Wait();
     PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(host_string);
   }
 }
 
 }  // namespace proxy
 }  // namespace ppapi