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

chrome/browser/prefs/pref_metrics_service.cc

 // Copyright 2013 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/prefs/pref_metrics_service.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/metrics/histogram.h"
@@ skipping 136 matching lines @@
           "Settings.HomePageEngineType",
           TemplateURLPrepopulateData::GetEngineType(homepage_url),
           SEARCH_ENGINE_MAX);
     }
   }
 
   int restore_on_startup = prefs_->GetInteger(prefs::kRestoreOnStartup);
   UMA_HISTOGRAM_ENUMERATION("Settings.StartupPageLoadSettings",
                             restore_on_startup, kSessionStartupPrefValueMax);
   if (restore_on_startup == SessionStartupPref::kPrefValueURLs) {
-    const ListValue* url_list = prefs_->GetList(prefs::kURLsToRestoreOnStartup);
+    const base::ListValue* url_list =
+        prefs_->GetList(prefs::kURLsToRestoreOnStartup);
     UMA_HISTOGRAM_CUSTOM_COUNTS("Settings.StartupPageLoadURLs",
                                 url_list->GetSize(), 1, 50, 20);
     // Similarly, check startup pages for known search engine TLD+1s.
     std::string url_text;
     for (size_t i = 0; i < url_list->GetSize(); ++i) {
       if (url_list->GetString(i, &url_text)) {
         GURL start_url(url_text);
         if (start_url.is_valid()) {
           UMA_HISTOGRAM_ENUMERATION(
               "Settings.StartupPageEngineTypes",
@@ skipping 59 matching lines @@
   PrefServiceSyncable* prefs = PrefServiceSyncable::FromProfile(profile_);
   const PrefService::Preference* pref = prefs->FindPreference(path.c_str());
   DCHECK(pref);
   std::string source_name(
       from_sync ? ".PulledFromSync" : ".PushedToSync");
   std::string histogram_name("Settings." + histogram_name_prefix + source_name);
   callback.Run(histogram_name, pref->GetValue());
 };
 
 void PrefMetricsService::LogBooleanPrefChange(const std::string& histogram_name,
-                                              const Value* value) {
+                                              const base::Value* value) {
   bool boolean_value = false;
   if (!value->GetAsBoolean(&boolean_value))
     return;
   base::HistogramBase* histogram = base::BooleanHistogram::FactoryGet(
       histogram_name, base::HistogramBase::kUmaTargetedHistogramFlag);
   histogram->Add(boolean_value);
 }
 
 void PrefMetricsService::LogIntegerPrefChange(int boundary_value,
                                               const std::string& histogram_name,
-                                              const Value* value) {
+                                              const base::Value* value) {
   int integer_value = 0;
   if (!value->GetAsInteger(&integer_value))
     return;
   base::HistogramBase* histogram = base::LinearHistogram::FactoryGet(
       histogram_name,
       1,
       boundary_value,
       boundary_value + 1,
       base::HistogramBase::kUmaTargetedHistogramFlag);
   histogram->Add(integer_value);
@@ skipping 198 matching lines @@
 }
 
 bool PrefMetricsService::Factory::ServiceIsNULLWhileTesting() const {
   return false;
 }
 
 content::BrowserContext* PrefMetricsService::Factory::GetBrowserContextToUse(
     content::BrowserContext* context) const {
   return chrome::GetBrowserContextRedirectedInIncognito(context);
 }