Abstract content::SessionStorageNamespace from core TabRestore code

chrome/browser/sessions/persistent_tab_restore_service.cc

 // Copyright 2012 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 "chrome/browser/sessions/persistent_tab_restore_service.h"
 
 #include <cstring>  // memcpy
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_vector.h"
 #include "base/stl_util.h"
 #include "base/task/cancelable_task_tracker.h"
 #include "base/time/time.h"
 #include "components/sessions/base_session_service.h"
 #include "components/sessions/base_session_service_commands.h"
 #include "components/sessions/base_session_service_delegate.h"
 #include "components/sessions/core/session_constants.h"
 #include "components/sessions/session_command.h"
-#include "content/public/browser/session_storage_namespace.h"
 
 namespace {
 
 // Only written if the tab is pinned.
 typedef bool PinnedStatePayload;
 
 typedef int32 RestoredEntryPayload;
 
 typedef std::map<SessionID::id_type, TabRestoreService::Entry*> IDToEntry;
 
@@ skipping 971 matching lines @@
   delegate_->LoadTabsFromLastSession();
 }
 
 TabRestoreService::Entries* PersistentTabRestoreService::mutable_entries() {
   return &helper_.entries_;
 }
 
 void PersistentTabRestoreService::PruneEntries() {
   helper_.PruneEntries();
 }