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

chrome/browser/prerender/prerender_history.cc

 // Copyright (c) 2011 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/prerender/prerender_history.h"
 
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/values.h"
 
@@ skipping 11 matching lines @@
   DCHECK(CalledOnValidThread());
   while (entries_.size() >= max_items_)
     entries_.pop_front();
   entries_.push_back(entry);
 }
 
 void PrerenderHistory::Clear() {
   entries_.clear();
 }
 
-Value* PrerenderHistory::GetEntriesAsValue() const {
-  ListValue* return_list = new ListValue();
+base::Value* PrerenderHistory::GetEntriesAsValue() const {
+  base::ListValue* return_list = new base::ListValue();
   // Javascript needs times in terms of milliseconds since Jan 1, 1970.
   base::Time epoch_start = base::Time::UnixEpoch();
   for (std::list<Entry>::const_reverse_iterator it = entries_.rbegin();
        it != entries_.rend();
        ++it) {
     const Entry& entry = *it;
-    DictionaryValue* entry_dict = new DictionaryValue();
+    base::DictionaryValue* entry_dict = new base::DictionaryValue();
     entry_dict->SetString("url", entry.url.spec());
     entry_dict->SetString("final_status",
                           NameFromFinalStatus(entry.final_status));
     entry_dict->SetString("origin", NameFromOrigin(entry.origin));
     // Use a string to prevent overflow, as Values don't support 64-bit
     // integers.
     entry_dict->SetString(
         "end_time",
         base::Int64ToString((entry.end_time - epoch_start).InMilliseconds()));
     return_list->Append(entry_dict);
   }
   return return_list;
 }
 
 }  // namespace prerender