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

chrome/browser/extensions/api/debugger/debugger_api.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.
 
 // Implements the Chrome Extensions Debugger API.
 
 #include "chrome/browser/extensions/api/debugger/debugger_api.h"
 
 #include <map>
 #include <set>
@@ skipping 568 matching lines @@
         params->required_version);
     return false;
   }
 
   if (agent_host_->IsAttached()) {
     FormatErrorMessage(keys::kAlreadyAttachedError);
     return false;
   }
 
   infobars::InfoBar* infobar = NULL;
-  if (!CommandLine::ForCurrentProcess()->
-       HasSwitch(::switches::kSilentDebuggerExtensionAPI)) {
+  if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
+          ::switches::kSilentDebuggerExtensionAPI)) {
     // Do not attach to the target if for any reason the infobar cannot be shown
     // for this WebContents instance.
     infobar = ExtensionDevToolsInfoBarDelegate::Create(
         agent_host_->GetWebContents(), extension()->name());
     if (!infobar) {
       error_ = ErrorUtils::FormatErrorMessage(
           keys::kSilentDebuggingRequired,
           ::switches::kSilentDebuggerExtensionAPI);
       return false;
     }
@@ skipping 133 matching lines @@
     const std::vector<DevToolsTargetImpl*>& target_list) {
   scoped_ptr<base::ListValue> result(new base::ListValue());
   for (size_t i = 0; i < target_list.size(); ++i)
     result->Append(SerializeTarget(*target_list[i]));
   STLDeleteContainerPointers(target_list.begin(), target_list.end());
   SetResult(result.release());
   SendResponse(true);
 }
 
 }  // namespace extensions