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

components/search/search_android_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/search/search.h"
 
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/statistics_recorder.h"
 #include "components/search/search_switches.h"
 #include "components/variations/entropy_provider.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace chrome {
 
 namespace {
 
 TEST(SearchTest, EmbeddedSearchAPIEnabled) {
   EXPECT_EQ(1ul, EmbeddedSearchPageVersion());
   EXPECT_FALSE(IsInstantExtendedAPIEnabled());
-  CommandLine::ForCurrentProcess()->AppendSwitch(
+  base::CommandLine::ForCurrentProcess()->AppendSwitch(
       switches::kEnableEmbeddedSearchAPI);
   EXPECT_EQ(2ul, EmbeddedSearchPageVersion());
   EXPECT_TRUE(IsInstantExtendedAPIEnabled());
 }
 
 }  // namespace
 
 }  // namespace chrome