Use correct IntToString variants in //chrome

chrome/browser/apps/ephemeral_app_service_unittest.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 <algorithm>
 
 #include "base/rand_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/time/time.h"
 #include "chrome/browser/apps/ephemeral_app_service.h"
@@ skipping 76 matching lines @@
 
   // Generate X app launch times, N days before the reference time.
   // If |generated_ids| is not NULL, the generated app IDs will be added
   // to the set.
   void GenerateLaunchTimes(const base::Time& reference_time,
                            int days_before,
                            int count,
                            LaunchTimeAppMap* launch_times,
                            std::set<std::string>* generated_ids = NULL) {
     for (int i = 0; i < count; ++i) {
-      std::string app_id = base::IntToString(launch_times->size());
+      std::string app_id = base::SizeTToString(launch_times->size());
       launch_times->insert(std::make_pair(
           GetPastTime(reference_time, days_before, true),
           app_id));
 
       if (generated_ids)
         generated_ids->insert(app_id);
     }
   }
 
   // Add inactive apps that should always be removed by garbage collection.
@@ skipping 149 matching lines @@
   const int kRunningApps = 3;
   AddIntermediateApps(
       time_now,
       EphemeralAppService::kMaxEphemeralAppsCount,
       &launch_times);  // overflow
   RunTestCheckLRU(
       launch_times.size() + kRunningApps,
       launch_times,
       kRunningApps);
 }