Convert use of int ms to TimeDelta in files owned by brettw.

chrome/common/worker_thread_ticker.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_COMMON_WORKER_THREAD_TICKER_H_
 #define CHROME_COMMON_WORKER_THREAD_TICKER_H_
 #pragma once
 
 #include <vector>
 
@@ skipping 40 matching lines @@
   // Stops the ticker and waits for all callbacks. to be done. This method
   // does not provide a way to stop without waiting for the callbacks to be
   // done because this is inherently risky.
   // Returns false is the ticker is not running
   bool Stop();
   bool IsRunning() const {
     return is_running_;
   }
 
   void set_tick_interval(int tick_interval) {
-    tick_interval_ = tick_interval;
+    tick_interval_ = base::TimeDelta::FromMilliseconds(tick_interval);
   }
 
   int tick_interval() const {
-    return tick_interval_;
+    return tick_interval_.InMilliseconds();
   }
 
  private:
   void ScheduleTimerTask();
 
   void TimerTask();
 
   // A list type that holds all registered callback interfaces
   typedef std::vector<Callback*> TickHandlerListType;
 
   // Lock to protect is_running_ and tick_handler_list_
   base::Lock lock_;
 
   base::Thread timer_thread_;
   bool is_running_;
 
   // The interval at which the callbacks are to be invoked
-  int tick_interval_;
+  base::TimeDelta tick_interval_;
 
   // A list that holds all registered callback interfaces
   TickHandlerListType tick_handler_list_;
 
   DISALLOW_COPY_AND_ASSIGN(WorkerThreadTicker);
 };
 
 #endif  // CHROME_COMMON_WORKER_THREAD_TICKER_H_