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

chrome/browser/chromeos/policy/device_local_account_policy_service.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.
 
 #include "chrome/browser/chromeos/policy/device_local_account_policy_service.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/file_util.h"
@@ skipping 148 matching lines @@
     return;
 
   core_.Connect(client.Pass());
   external_data_manager_->Connect(request_context);
   core_.StartRefreshScheduler();
   UpdateRefreshDelay();
 }
 
 void DeviceLocalAccountPolicyBroker::UpdateRefreshDelay() {
   if (core_.refresh_scheduler()) {
-    const Value* policy_value =
+    const base::Value* policy_value =
         store_->policy_map().GetValue(key::kPolicyRefreshRate);
     int delay = 0;
     if (policy_value && policy_value->GetAsInteger(&delay))
       core_.refresh_scheduler()->SetRefreshDelay(delay);
   }
 }
 
 std::string DeviceLocalAccountPolicyBroker::GetDisplayName() const {
   std::string display_name;
   const base::Value* display_name_value =
@@ skipping 323 matching lines @@
         CloudPolicyStore* store) {
   for (PolicyBrokerMap::iterator it(policy_brokers_.begin());
        it != policy_brokers_.end(); ++it) {
     if (it->second->core()->store() == store)
       return it->second;
   }
   return NULL;
 }
 
 }  // namespace policy