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

chrome/browser/extensions/api/declarative_webrequest/webrequest_condition.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/extensions/api/declarative_webrequest/webrequest_condition.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "base/strings/stringprintf.h"
@@ skipping 136 matching lines @@
     return scoped_ptr<WebRequestCondition>();
   }
 
   WebRequestConditionAttributes attributes;
   scoped_refptr<URLMatcherConditionSet> url_matcher_condition_set;
   scoped_refptr<URLMatcherConditionSet> first_party_url_matcher_condition_set;
 
   for (base::DictionaryValue::Iterator iter(*condition_dict);
        !iter.IsAtEnd(); iter.Advance()) {
     const std::string& condition_attribute_name = iter.key();
-    const Value& condition_attribute_value = iter.value();
+    const base::Value& condition_attribute_value = iter.value();
     const bool name_is_url = condition_attribute_name == keys::kUrlKey;
     if (condition_attribute_name == keys::kInstanceTypeKey) {
       // Skip this.
     } else if (name_is_url ||
                condition_attribute_name == keys::kFirstPartyForCookiesUrlKey) {
       const base::DictionaryValue* dict = NULL;
       if (!condition_attribute_value.GetAsDictionary(&dict)) {
         *error = base::StringPrintf(kInvalidTypeOfParamter,
                                     condition_attribute_name.c_str());
       } else {
@@ skipping 27 matching lines @@
 
   if (!result->stages()) {
     *error = kConditionCannotBeFulfilled;
     return scoped_ptr<WebRequestCondition>();
   }
 
   return result.Pass();
 }
 
 }  // namespace extensions