session_manager: Create ChromeSessionManager early

components/session_manager/core/session_manager.cc

 // Copyright 2014 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.
 
 #include "components/session_manager/core/session_manager.h"
 
 #include "base/logging.h"
 #include "build/build_config.h"
 
 namespace session_manager {
@@ skipping 28 matching lines @@
 }
 
 bool SessionManager::IsSessionStarted() const {
   return session_started_;
 }
 
 void SessionManager::SessionStarted() {
   session_started_ = true;
 }
 
-void SessionManager::Initialize(SessionManagerDelegate* delegate) {
-  DCHECK(delegate);
-  delegate_.reset(delegate);
-  delegate_->SetSessionManager(this);
-}
-
 // static
 void SessionManager::SetInstance(SessionManager* session_manager) {
   SessionManager::instance = session_manager;
 }
 
-void SessionManager::Start() {
-  delegate_->Start();
-}
-
-SessionManagerDelegate::SessionManagerDelegate() {
-}
-
-SessionManagerDelegate::~SessionManagerDelegate() {
-}
-
-void SessionManagerDelegate::SetSessionManager(
-    session_manager::SessionManager* session_manager) {
-  session_manager_ = session_manager;
-}
-
 }  // namespace session_manager