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

chrome/browser/chromeos/login/screens/screen_context.cc

 // Copyright (c) 2013 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/login/screens/screen_context.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 
 namespace chromeos {
@@ skipping 69 matching lines @@
 bool ScreenContext::HasKey(const KeyType& key) const {
   DCHECK(CalledOnValidThread());
   return storage_.HasKey(key);
 }
 
 bool ScreenContext::HasChanges() const {
   DCHECK(CalledOnValidThread());
   return !changes_.empty();
 }
 
-void ScreenContext::GetChangesAndReset(DictionaryValue* diff) {
+void ScreenContext::GetChangesAndReset(base::DictionaryValue* diff) {
   DCHECK(CalledOnValidThread());
   DCHECK(diff);
   changes_.Swap(diff);
   changes_.Clear();
 }
 
-void ScreenContext::ApplyChanges(const DictionaryValue& diff,
+void ScreenContext::ApplyChanges(const base::DictionaryValue& diff,
                                  std::vector<std::string>* keys) {
   DCHECK(CalledOnValidThread());
   DCHECK(!HasChanges());
   DCHECK(keys);
   keys->clear();
   keys->reserve(diff.size());
   base::DictionaryValue::Iterator it(diff);
   while (!it.IsAtEnd()) {
     Set(it.key(), it.value().DeepCopy());
     keys->push_back(it.key());
     it.Advance();
   }
   changes_.Clear();
 }
 
-bool ScreenContext::Set(const KeyType& key, Value* value) {
+bool ScreenContext::Set(const KeyType& key, base::Value* value) {
   DCHECK(CalledOnValidThread());
   DCHECK(value);
-  scoped_ptr<Value> new_value(value);
+  scoped_ptr<base::Value> new_value(value);
 
-  Value* current_value;
+  base::Value* current_value;
   bool in_storage = storage_.Get(key, &current_value);
 
   // Don't do anything if |storage_| already contains <|key|, |new_value|> pair.
   if (in_storage && new_value->Equals(current_value))
     return false;
 
   changes_.Set(key, new_value->DeepCopy());
   storage_.Set(key, new_value.release());
   return true;
 }
 
 }  // namespace chromeos