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

extensions/renderer/process_info_native_handler.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 "extensions/renderer/process_info_native_handler.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "extensions/renderer/script_context.h"
 
@@ skipping 60 matching lines @@
     args.GetReturnValue().Set(v8::String::NewFromUtf8(
         args.GetIsolate(),
         "sendRequest and onRequest are obsolete."
         " Please use sendMessage and onMessage instead."));
   }
 }
 
 void ProcessInfoNativeHandler::HasSwitch(
     const v8::FunctionCallbackInfo<v8::Value>& args) {
   CHECK(args.Length() == 1 && args[0]->IsString());
-  bool has_switch = CommandLine::ForCurrentProcess()->HasSwitch(
+  bool has_switch = base::CommandLine::ForCurrentProcess()->HasSwitch(
       *v8::String::Utf8Value(args[0]));
   args.GetReturnValue().Set(v8::Boolean::New(args.GetIsolate(), has_switch));
 }
 
 }  // namespace extensions