user_manager: Remove deps on session_manager

components/user_manager/fake_user_manager.h

Index: components/user_manager/fake_user_manager.h
diff --git a/components/user_manager/fake_user_manager.h b/components/user_manager/fake_user_manager.h
index 97762456f844f51e16235a06070a976aaec0a345..06cbe3f5732b13758d39b827e6c16ea71774d8ab 100644
--- a/components/user_manager/fake_user_manager.h
+++ b/components/user_manager/fake_user_manager.h
@@ -63,7 +63,7 @@ class USER_MANAGER_EXPORT FakeUserManager : public UserManagerBase {
   const user_manager::UserList& GetLRULoggedInUsers() const override;
   user_manager::UserList GetUnlockUsers() const override;
   const AccountId& GetOwnerAccountId() const override;
-  void SessionStarted() override {}
+  void OnSessionStarted() override {}
   void RemoveUser(const AccountId& account_id,
                   user_manager::RemoveUserDelegate* delegate) override {}
   void RemoveUserFromList(const AccountId& account_id) override;
@@ -94,7 +94,6 @@ class USER_MANAGER_EXPORT FakeUserManager : public UserManagerBase {
   bool IsLoggedInAsSupervisedUser() const override;
   bool IsLoggedInAsKioskApp() const override;
   bool IsLoggedInAsStub() const override;
-  bool IsSessionStarted() const override;
   bool IsUserNonCryptohomeDataEphemeral(
       const AccountId& account_id) const override;
   void AddObserver(Observer* obs) override {}