Track when profiles are last used.

chrome/browser/profiles/profile_info_cache.h

Index: chrome/browser/profiles/profile_info_cache.h
diff --git a/chrome/browser/profiles/profile_info_cache.h b/chrome/browser/profiles/profile_info_cache.h
index cc61e04a714189b9434a2b774eb46cc9c5b15939..922a090e9bac9b91d131dca336c132da727ade74 100644
--- a/chrome/browser/profiles/profile_info_cache.h
+++ b/chrome/browser/profiles/profile_info_cache.h
@@ -57,6 +57,7 @@ class ProfileInfoCache : public ProfileInfoInterface,
   virtual base::string16 GetShortcutNameOfProfileAtIndex(size_t index)
       const OVERRIDE;
   virtual base::FilePath GetPathOfProfileAtIndex(size_t index) const OVERRIDE;
+  virtual base::Time GetProfileActive(size_t index) const OVERRIDE;

[noms (inactive), 2014/01/13 16:39:44]

I think the function should end in "AtIndex", to be consistent. Maybe
GetLastActiveTimeOfProfileAtIndex? Then the preference key should probably also
be called last_active_time.

[bcwhite, 2014/01/13 17:05:48]

Done.

   virtual base::string16 GetUserNameOfProfileAtIndex(
       size_t index) const OVERRIDE;
   virtual const gfx::Image& GetAvatarIconOfProfileAtIndex(
@@ -88,6 +89,7 @@ class ProfileInfoCache : public ProfileInfoInterface,
 
   size_t GetAvatarIconIndexOfProfileAtIndex(size_t index) const;
 
+  void SetProfileActive(size_t index);

[noms (inactive), 2014/01/13 16:39:44]

Same comment as above

[bcwhite, 2014/01/13 17:05:48]

Done.

   void SetNameOfProfileAtIndex(size_t index, const base::string16& name);
   void SetShortcutNameOfProfileAtIndex(size_t index,
                                        const base::string16& name);