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

chrome/browser/devtools/device/port_forwarding_browsertest.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 "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/string_number_conversions.h"
 #include "chrome/browser/devtools/browser_list_tabcontents_provider.h"
 #include "chrome/browser/devtools/device/devtools_android_bridge.h"
@@ skipping 16 matching lines @@
 const int kDefaultDebuggingPort = 9223;
 const int kAlternativeDebuggingPort = 9224;
 
 }
 
 class PortForwardingTest: public InProcessBrowserTest {
   virtual int GetRemoteDebuggingPort() {
     return kDefaultDebuggingPort;
   }
 
-  void SetUpCommandLine(CommandLine* command_line) override {
+  void SetUpCommandLine(base::CommandLine* command_line) override {
     InProcessBrowserTest::SetUpCommandLine(command_line);
     command_line->AppendSwitchASCII(switches::kRemoteDebuggingPort,
         base::IntToString(GetRemoteDebuggingPort()));
   }
 
  protected:
   class Listener : public DevToolsAndroidBridge::PortForwardingListener {
    public:
     explicit Listener(Profile* profile)
         : profile_(profile),
@@ skipping 123 matching lines @@
   content::RunMessageLoop();
 
   self_provider->set_release_callback_for_test(
       base::Bind(&base::MessageLoop::PostTask,
                  base::Unretained(base::MessageLoop::current()),
                  FROM_HERE,
                  base::MessageLoop::QuitClosure()));
   wait_for_port_forwarding.reset();
   content::RunMessageLoop();
 }