Track when profiles are last used.

chrome/browser/profiles/profile_info_interface.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_BROWSER_PROFILES_PROFILE_INFO_INTERFACE_H_
 #define CHROME_BROWSER_PROFILES_PROFILE_INFO_INTERFACE_H_
 
 #include "base/files/file_path.h"
 #include "base/strings/string16.h"
 
+namespace base {
+class Time;
+}
+
 namespace gfx {
 class Image;
 }
 
 // This abstract interface is used to query the profiles backend for information
 // about the different profiles. Its sole concrete implementation is the
 // ProfileInfoCache. This interface exists largely to assist in testing.
 class ProfileInfoInterface {
  public:
   virtual size_t GetNumberOfProfiles() const = 0;
 
   virtual size_t GetIndexOfProfileWithPath(
       const base::FilePath& profile_path) const = 0;
 
+  virtual base::Time GetProfileActive(size_t index) const = 0;
+
   virtual base::string16 GetNameOfProfileAtIndex(size_t index) const = 0;
 
   virtual base::string16 GetShortcutNameOfProfileAtIndex(
       size_t index) const = 0;
 
   virtual base::FilePath GetPathOfProfileAtIndex(size_t index) const = 0;
 
   virtual base::string16 GetUserNameOfProfileAtIndex(size_t index) const = 0;
 
   virtual const gfx::Image& GetAvatarIconOfProfileAtIndex(
@@ skipping 29 matching lines @@
   virtual bool ProfileIsSigninRequiredAtIndex(size_t index) const = 0;
 
   // Profile is known to be ephemeral and should be deleted when closed.
   virtual bool ProfileIsEphemeralAtIndex(size_t index) const = 0;
 
  protected:
   virtual ~ProfileInfoInterface() {}
 };
 
 #endif  // CHROME_BROWSER_PROFILES_PROFILE_INFO_INTERFACE_H_