base: Add Is* functions to Value class.

chrome/browser/ui/webui/options/chromeos/system_settings_provider.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/ui/webui/options/chromeos/system_settings_provider.h"
 
 #include <string>
 
 #include "base/i18n/rtl.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 183 matching lines @@
   STLDeleteElements(&timezones_);
 }
 
 void SystemSettingsProvider::DoSet(const std::string& path, Value* in_value) {
   // Non-guest users can change the time zone.
   if (UserManager::Get()->IsLoggedInAsGuest())
     return;
 
   if (path == kSystemTimezone) {
     string16 value;
-    if (!in_value || !in_value->IsType(Value::TYPE_STRING) ||
-        !in_value->GetAsString(&value))
+    if (!in_value || !in_value->IsString() || !in_value->GetAsString(&value))
       return;
     const icu::TimeZone* timezone = GetTimezone(value);
     if (!timezone)
       return;
     system::TimezoneSettings::GetInstance()->SetTimezone(*timezone);
   }
 }
 
 bool SystemSettingsProvider::Get(const std::string& path,
                                  Value** out_value) const {
@@ skipping 91 matching lines @@
     const icu::TimeZone* known_timezone = *iter;
     if (known_timezone->hasSameRules(timezone))
       return GetTimezoneID(*known_timezone);
   }
 
   // Not able to find a matching timezone in our list.
   return string16();
 }
 
 }  // namespace chromeos