Convert uses of int ms to TimeDelta in chrome/browser and net.

chrome/browser/metrics/metrics_service.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.
 
 //------------------------------------------------------------------------------
 // Description of the life cycle of a instance of MetricsService.
 //
 //  OVERVIEW
 //
 // A MetricsService instance is typically created at application startup.  It
@@ skipping 816 matching lines @@
     // Schedules a task on the file thread for execution of slower
     // initialization steps (such as plugin list generation) necessary
     // for sending the initial log.  This avoids blocking the main UI
     // thread.
     BrowserThread::PostDelayedTask(
         BrowserThread::FILE,
         FROM_HERE,
         base::Bind(&MetricsService::InitTaskGetHardwareClass,
             self_ptr_factory_.GetWeakPtr(),
             MessageLoop::current()->message_loop_proxy()),
-        kInitializationDelaySeconds);
+        base::TimeDelta::FromSeconds(kInitializationDelaySeconds));
   }
 }
 
 void MetricsService::StopRecording() {
   if (!log_manager_.current_log())
     return;
 
   // TODO(jar): Integrate bounds on log recording more consistently, so that we
   // can stop recording logs that are too big much sooner.
   if (log_manager_.current_log()->num_events() > kEventLimit) {
@@ skipping 810 matching lines @@
   if (local_state) {
     const PrefService::Preference* uma_pref =
         local_state->FindPreference(prefs::kMetricsReportingEnabled);
     if (uma_pref) {
       bool success = uma_pref->GetValue()->GetAsBoolean(&result);
       DCHECK(success);
     }
   }
   return result;
 }