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

chrome/browser/performance_monitor/performance_monitor_browsertest.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 "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/threading/sequenced_worker_pool.h"
@@ skipping 67 matching lines @@
   std::string id;
   std::string name;
   std::string url;
   std::string version;
   extensions::Manifest::Location location;
 };
 
 // Compare the fields of |extension| to those in |value|; this is a check to
 // make sure the extension data was recorded properly in the event.
 void ValidateExtensionInfo(const ExtensionBasicInfo extension,
-                           const DictionaryValue* value) {
+                           const base::DictionaryValue* value) {
   std::string extension_description;
   std::string extension_id;
   std::string extension_name;
   std::string extension_url;
   std::string extension_version;
   int extension_location;
 
   ASSERT_TRUE(value->GetString("extensionDescription",
                                &extension_description));
   ASSERT_EQ(extension.description, extension_description);
@@ skipping 686 matching lines @@
       test_server()->GetURL(std::string("files/").append("title2.html")));
 
   GatherStatistics();
 
   metrics = GetStats(METRIC_NETWORK_BYTES_READ);
   ASSERT_EQ(2u, metrics.size());
   EXPECT_GE(metrics[1].value, page1_size + page2_size);
 }
 
 }  // namespace performance_monitor