base: Add Is* functions to Value class.

chrome/browser/metrics/metrics_service.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.
 
 //------------------------------------------------------------------------------
 // Description of the life cycle of a instance of MetricsService.
 //
 //  OVERVIEW
 //
 // A MetricsService instance is typically created at application startup.  It
@@ skipping 1573 matching lines @@
   ScheduleNextStateSave();
 }
 
 void MetricsService::RecordPluginChanges(PrefService* pref) {
   ListPrefUpdate update(pref, prefs::kStabilityPluginStats);
   ListValue* plugins = update.Get();
   DCHECK(plugins);
 
   for (ListValue::iterator value_iter = plugins->begin();
        value_iter != plugins->end(); ++value_iter) {
-    if (!(*value_iter)->IsType(Value::TYPE_DICTIONARY)) {
+    if (!(*value_iter)->IsDictionary()) {
       NOTREACHED();
       continue;
     }
 
     DictionaryValue* plugin_dict = static_cast<DictionaryValue*>(*value_iter);
     std::string plugin_name;
     plugin_dict->GetString(prefs::kStabilityPluginName, &plugin_name);
     if (plugin_name.empty()) {
       NOTREACHED();
       continue;
@@ skipping 88 matching lines @@
     thread_id = base::PlatformThread::CurrentId();
   return base::PlatformThread::CurrentId() == thread_id;
 }
 
 #if defined(OS_CHROMEOS)
 void MetricsService::StartExternalMetrics() {
   external_metrics_ = new chromeos::ExternalMetrics;
   external_metrics_->Start();
 }
 #endif