Add support for child accounts.

chrome/browser/supervised_user/supervised_user_service.h

Index: chrome/browser/supervised_user/supervised_user_service.h
diff --git a/chrome/browser/supervised_user/supervised_user_service.h b/chrome/browser/supervised_user/supervised_user_service.h
index 380705d3ee640a008b2c20d69ec28508f20f7166..6ada9cf6aeff8ccf75689e450478626c250660b5 100644
--- a/chrome/browser/supervised_user/supervised_user_service.h
+++ b/chrome/browser/supervised_user/supervised_user_service.h
@@ -83,6 +83,8 @@ class SupervisedUserService : public KeyedService,
     // Returns true to indicate that the delegate handled the (de)activation, or
     // false to indicate that the SupervisedUserService itself should handle it.
     virtual bool SetActive(bool active) = 0;
+    // Returns whether the current profile is linked to a child account.
+    virtual bool IsChildAccount() const;
     // Returns the path to a blacklist file to load, or an empty path to
     // indicate "none".
     virtual base::FilePath GetBlacklistPath() const;
@@ -128,6 +130,9 @@ class SupervisedUserService : public KeyedService,
   // a dictionary which currently has the timestamp of the request in it.
   void AddAccessRequest(const GURL& url, const SuccessCallback& callback);
 
+  // Returns whether the profile is linked to a child account.
+  bool IsChildAccount() const;
+
   // Returns the email address of the custodian.
   std::string GetCustodianEmailAddress() const;