Update some uses of Value in chrome/browser to use the base:: namespace.

chrome/browser/extensions/api/cookies/cookies_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 Cookies API.
 
 #include "chrome/browser/extensions/api/cookies/cookies_api.h"
 
 #include <vector>
 
@@ skipping 238 matching lines @@
     if (it->Name() == parsed_args_->details.name) {
       scoped_ptr<Cookie> cookie(
           cookies_helpers::CreateCookie(*it, *parsed_args_->details.store_id));
       results_ = Get::Results::Create(*cookie);
       break;
     }
   }
 
   // The cookie doesn't exist; return null.
   if (it == cookie_list.end())
-    SetResult(Value::CreateNullValue());
+    SetResult(base::Value::CreateNullValue());
 
   bool rv = BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE,
       base::Bind(&CookiesGetFunction::RespondOnUIThread, this));
   DCHECK(rv);
 }
 
 void CookiesGetFunction::RespondOnUIThread() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   SendResponse(true);
@@ skipping 309 matching lines @@
   return &g_factory.Get();
 }
 
 void CookiesAPI::OnListenerAdded(
     const extensions::EventListenerInfo& details) {
   cookies_event_router_.reset(new CookiesEventRouter(profile_));
   ExtensionSystem::Get(profile_)->event_router()->UnregisterObserver(this);
 }
 
 }  // namespace extensions