Augment time_format.h/.cc to format elapsed time also.

Review URL: http://codereview.chromium.org/67186

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@13874 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 10 insertions, 5 deletions

diff --git a/chrome/common/time_format.h b/chrome/common/time_format.h
index 252599b..c04ed62 100644
--- a/chrome/common/time_format.h
+++ b/chrome/common/time_format.h
@@ -18,13 +18,18 @@ 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".
+  // TimeElapsed, TimeRemaining and TimeRemainingShort functions:
+  // These functions return a localized string of approximate time duration. The
+  // conditions are simpler than PastTime since these functions are used for
+  // in-progress operations and users have different expectations of units.
+
+  // Returns times in elapsed-format: "3 mins ago", "2 days ago".
+  static std::wstring TimeElapsed(const base::TimeDelta& delta);
+
+  // Returns times in remaining-format: "3 mins left", "2 days left".
   static std::wstring TimeRemaining(const base::TimeDelta& delta);
 
-  // Same as TimeRemaining without the "left".
+  // Returns times in short-format: "3 mins", "2 days".
   static std::wstring TimeRemainingShort(const base::TimeDelta& delta);
 
   // For displaying a relative time in the past.  This method returns either