Fix the low battery notification string from mins -> minutes.

ash/shell_delegate.h

Index: ash/shell_delegate.h
diff --git a/ash/shell_delegate.h b/ash/shell_delegate.h
index c1991c3efcbee6685667c3f3f42a4a66aa947857..819297c5b6a405eca58ea4ab85918e3959a8af74 100644
--- a/ash/shell_delegate.h
+++ b/ash/shell_delegate.h
@@ -168,11 +168,6 @@ class ASH_EXPORT ShellDelegate {
   // Handles the Previous Track Media shortcut key.
   virtual void HandleMediaPrevTrack() = 0;
 
-  // Produces l10n-ed text of remaining time, e.g.: "13 mins left" or
-  // "13 Minuten übrig".
-  // Used, for example, to display the remaining battery life.
-  virtual string16 GetTimeRemainingString(base::TimeDelta delta) = 0;
-
   // Saves the zoom scale of the full screen magnifier.
   virtual void SaveScreenMagnifierScale(double scale) = 0;