Make base::Value::TYPE a scoped enum.

chrome/browser/policy/policy_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 <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
 #include <memory>
 #include <string>
@@ skipping 450 matching lines @@
       "domAutomationController.send(context != null);",
       &result));
   return result;
 }
 
 bool IsJavascriptEnabled(content::WebContents* contents) {
   std::unique_ptr<base::Value> value =
       content::ExecuteScriptAndGetValue(contents->GetMainFrame(), "123");
   int result = 0;
   if (!value->GetAsInteger(&result))
-    EXPECT_EQ(base::Value::TYPE_NULL, value->GetType());
+    EXPECT_EQ(base::Value::Type::NONE, value->GetType());
   return result == 123;
 }
 
 bool IsNetworkPredictionEnabled(PrefService* prefs) {
   return chrome_browser_net::CanPrefetchAndPrerenderUI(prefs) ==
       chrome_browser_net::NetworkPredictionStatus::ENABLED;
 }
 
 void FlushBlacklistPolicy() {
   // Updates of the URLBlacklist are done on IO, after building the blacklist
@@ skipping 3746 matching lines @@
 
   SetEmptyPolicy();
   // Policy not set.
   CheckSystemTimezoneAutomaticDetectionPolicyUnset();
   EXPECT_TRUE(CheckResolveTimezoneByGeolocation(true, false));
   EXPECT_TRUE(manager->TimeZoneResolverShouldBeRunningForTests());
 }
 #endif  // defined(OS_CHROMEOS)
 
 }  // namespace policy