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

chrome/browser/policy/cloud/cloud_policy_browsertest.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/callback.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 191 matching lines @@
 
   void SetUpInProcessBrowserTestFixture() override {
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
     ASSERT_NO_FATAL_FAILURE(SetServerPolicy(GetEmptyPolicy()));
 
     test_server_.reset(new LocalPolicyTestServer(policy_file_path()));
     ASSERT_TRUE(test_server_->Start());
 
     std::string url = test_server_->GetServiceURL().spec();
 
-    CommandLine* command_line = CommandLine::ForCurrentProcess();
+    base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
     command_line->AppendSwitchASCII(switches::kDeviceManagementUrl, url);
 
     invalidation::ProfileInvalidationProviderFactory::GetInstance()->
         RegisterTestingFactory(BuildFakeProfileInvalidationProvider);
   }
 
   void SetUpOnMainThread() override {
     ASSERT_TRUE(PolicyServiceIsEmpty(g_browser_process->policy_service()))
         << "Pre-existing policies in this machine will make this test fail.";
 
@@ skipping 259 matching lines @@
 
   // They should now serialize to the same bytes.
   std::string chrome_settings_serialized;
   std::string cloud_policy_serialized;
   ASSERT_TRUE(chrome_settings.SerializeToString(&chrome_settings_serialized));
   ASSERT_TRUE(cloud_policy.SerializeToString(&cloud_policy_serialized));
   EXPECT_EQ(chrome_settings_serialized, cloud_policy_serialized);
 }
 
 }  // namespace policy