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

components/translate/core/common/translate_util_unittest.cc

 // Copyright 2014 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 "components/translate/core/common/translate_util.h"
 
 #include "base/command_line.h"
 #include "components/translate/core/common/translate_switches.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
@@ skipping 44 matching lines @@
   language = std::string("en");
   translate::ToChromeLanguageSynonym(&language);
   EXPECT_EQ("en", language);
 }
 
 TEST_F(TranslateUtilTest, SecurityOrigin) {
   GURL origin = translate::GetTranslateSecurityOrigin();
   EXPECT_EQ(std::string(translate::kSecurityOrigin), origin.spec());
 
   const std::string running_origin("http://www.tamurayukari.com/");
-  CommandLine* command_line = CommandLine::ForCurrentProcess();
+  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   command_line->AppendSwitchASCII(translate::switches::kTranslateSecurityOrigin,
                                   running_origin);
   GURL modified_origin = translate::GetTranslateSecurityOrigin();
   EXPECT_EQ(running_origin, modified_origin.spec());
 }