user_manager: Remove deps on session_manager

components/user_manager/user_manager_base.cc

Index: components/user_manager/user_manager_base.cc
diff --git a/components/user_manager/user_manager_base.cc b/components/user_manager/user_manager_base.cc
index f3ddd7d84349e47cf0b9a1a70d448e9fb0607b9c..b4c69a826b741e4431b21c8a0d0d6bb0341b44c1 100644
--- a/components/user_manager/user_manager_base.cc
+++ b/components/user_manager/user_manager_base.cc
@@ -26,7 +26,6 @@
 #include "components/prefs/pref_registry_simple.h"
 #include "components/prefs/pref_service.h"
 #include "components/prefs/scoped_user_pref_update.h"
-#include "components/session_manager/core/session_manager.h"
 #include "components/user_manager/known_user.h"
 #include "components/user_manager/remove_user_delegate.h"
 #include "components/user_manager/user_type.h"
@@ -250,14 +249,10 @@ void UserManagerBase::SwitchToLastActiveUser() {
   last_session_active_account_id_.clear();
 }
 
-void UserManagerBase::SessionStarted() {
+void UserManagerBase::OnSessionStarted() {
   DCHECK(task_runner_->RunsTasksOnCurrentThread());
-  session_started_ = true;
 
   CallUpdateLoginState();
-  session_manager::SessionManager::Get()->SetSessionState(
-      session_manager::SessionState::ACTIVE);
-
   GetLocalState()->CommitPendingWrite();
 }
 
@@ -591,11 +586,6 @@ bool UserManagerBase::IsLoggedInAsStub() const {
   return IsUserLoggedIn() && IsStubAccountId(active_user_->GetAccountId());
 }
 
-bool UserManagerBase::IsSessionStarted() const {
-  DCHECK(task_runner_->RunsTasksOnCurrentThread());
-  return session_started_;
-}
-
 bool UserManagerBase::IsUserNonCryptohomeDataEphemeral(
     const AccountId& account_id) const {
   // Data belonging to the guest and stub users is always ephemeral.