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

chrome/browser/local_discovery/privet_http_asynchronous_factory_impl.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 "chrome/browser/local_discovery/privet_http_asynchronous_factory_impl.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/local_discovery/privet_http_impl.h"
@@ skipping 44 matching lines @@
     const net::HostPortPair& address,
     const ResultCallback& callback,
     ServiceDiscoveryClient* service_discovery_client,
     net::URLRequestContextGetter* request_context)
     : name_(name),
       hostport_(address),
       callback_(callback),
       request_context_(request_context) {
   net::AddressFamily address_family = net::ADDRESS_FAMILY_UNSPECIFIED;
 
-  if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kPrivetIPv6Only)) {
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kPrivetIPv6Only)) {
     address_family = net::ADDRESS_FAMILY_IPV6;
   }
 
   resolver_ = service_discovery_client->CreateLocalDomainResolver(
       address.host(),
       address_family,
       base::Bind(&ResolutionImpl::ResolveComplete, base::Unretained(this)));
 }
 
 PrivetHTTPAsynchronousFactoryImpl::ResolutionImpl::~ResolutionImpl() {
@@ skipping 23 matching lines @@
 
   DCHECK(!address.empty());
 
   net::HostPortPair new_address =
       net::HostPortPair(IPAddressToHostString(address), hostport_.port());
   callback_.Run(scoped_ptr<PrivetHTTPClient>(
       new PrivetHTTPClientImpl(name_, new_address, request_context_.get())));
 }
 
 }  // namespace local_discovery