Make Use of Value::GetList API

chrome/browser/net/predictor.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 "chrome/browser/net/predictor.h"
 
 #include <algorithm>
 #include <cmath>
 #include <iterator>
 #include <set>
@@ skipping 542 matching lines @@
     referral_list->Append(std::move(motivator));
   }
 }
 
 void Predictor::DeserializeReferrers(const base::ListValue& referral_list) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   int format_version = -1;
   if (referral_list.GetSize() > 0 &&
       referral_list.GetInteger(0, &format_version) &&
       format_version == kPredictorReferrerVersion) {
+    const auto& list = referral_list.base::Value::GetList();
     for (size_t i = 1; i < referral_list.GetSize(); ++i) {
-      const base::ListValue* motivator;
-      if (!referral_list.GetList(i, &motivator)) {
+      if (!list[i].is_list()) {
         NOTREACHED();
         return;
       }
+      const base::ListValue* motivator =
+          static_cast<const base::ListValue*>(&list[i]);
       std::string motivating_url_spec;
       if (!motivator->GetString(0, &motivating_url_spec)) {
         NOTREACHED();
         return;
       }
 
       const base::Value* subresource_list;
       if (!motivator->Get(1, &subresource_list)) {
         NOTREACHED();
         return;
@@ skipping 621 matching lines @@
 }
 
 void SimplePredictor::ShutdownOnUIThread() {
   SetShutdown(true);
 }
 
 bool SimplePredictor::CanPrefetchAndPrerender() const { return true; }
 bool SimplePredictor::CanPreresolveAndPreconnect() const { return true; }
 
 }  // namespace chrome_browser_net