Move Time, TimeDelta and TimeTicks into namespace base.

chrome/common/time_format.h

 // Copyright (c) 2006-2008 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_TIME_FORMAT_H__
 #define CHROME_COMMON_TIME_FORMAT_H__
 
 // This file defines methods to format time values as strings.
 
 #include <string>
 
 #include "unicode/smpdtfmt.h"
 
+namespace base {
 class Time;
 class TimeDelta;
+}
 
 class TimeFormat {
  public:
   // Returns a localized string of approximate time remaining. The conditions
   // are simpler than PastTime since this is used for in-progress operations
   // and users have different expectations of units.
   // Ex: "3 mins left", "2 days left".
-  static std::wstring TimeRemaining(const TimeDelta& delta);
+  static std::wstring TimeRemaining(const base::TimeDelta& delta);
 
   // Same as TimeRemaining without the "left".
-  static std::wstring TimeRemainingShort(const TimeDelta& delta);
+  static std::wstring TimeRemainingShort(const base::TimeDelta& delta);
 
   // For displaying a relative time in the past.  This method returns either
   // "Today", "Yesterday", or an empty string if it's older than that.
   //
   // TODO(brettw): This should be able to handle days in the future like
   //    "Tomorrow".
   // TODO(tc): This should be able to do things like "Last week".  This
   //    requires handling singluar/plural for all languages.
   //
   // The second parameter is optional, it is midnight of "Now" for relative day
   // computations: Time::Now().LocalMidnight()
   // If NULL, the current day's midnight will be retrieved, which can be
   // slow. If many items are being processed, it is best to get the current
   // time once at the beginning and pass it for each computation.
-  static std::wstring RelativeDate(const Time& time,
-                                   const Time* optional_midnight_today);
+  static std::wstring RelativeDate(const base::Time& time,
+                                   const base::Time* optional_midnight_today);
 };
 
 #endif  // CHROME_COMMON_TIME_FORMAT_H__
-