Abstract content::SessionStorageNamespace from core TabRestore code

chrome/browser/sessions/tab_restore_service.cc

 // Copyright (c) 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/tab_restore_service.h"
 
-#include "content/public/browser/session_storage_namespace.h"
-
 // TimeFactory-----------------------------------------------------------------
 
 TabRestoreService::TimeFactory::~TimeFactory() {}
 
 // Entry ----------------------------------------------------------------------
 
 // ID of the next Entry.
 static SessionID::id_type next_entry_id = 1;
 
 TabRestoreService::Entry::Entry()
@@ skipping 11 matching lines @@
 // Tab ------------------------------------------------------------------------
 
 TabRestoreService::Tab::Tab()
     : Entry(TAB),
       current_navigation_index(-1),
       browser_id(0),
       tabstrip_index(-1),
       pinned(false) {
 }
 
+TabRestoreService::Tab::Tab(const TabRestoreService::Tab& tab)
+    : Entry(TAB),
+      navigations(tab.navigations),
+      current_navigation_index(tab.current_navigation_index),
+      browser_id(tab.browser_id),
+      tabstrip_index(tab.tabstrip_index),
+      pinned(tab.pinned),
+      extension_app_id(tab.extension_app_id),
+      user_agent_override(tab.user_agent_override) {
+  if (tab.client_data)
+    client_data = tab.client_data->Clone();
+}
+
 TabRestoreService::Tab::~Tab() {
 }
 
+TabRestoreService::Tab& TabRestoreService::Tab::operator=(
+    const TabRestoreService::Tab& tab) {
+  navigations = tab.navigations;
+  current_navigation_index = tab.current_navigation_index;
+  browser_id = tab.browser_id;
+  tabstrip_index = tab.tabstrip_index;
+  pinned = tab.pinned;
+  extension_app_id = tab.extension_app_id;
+  user_agent_override = tab.user_agent_override;
+
+  if (tab.client_data)
+    client_data = tab.client_data->Clone();
+
+  return *this;
+}
+
 // Window ---------------------------------------------------------------------
 
 TabRestoreService::Window::Window() : Entry(WINDOW), selected_tab_index(-1) {
 }
 
 TabRestoreService::Window::~Window() {
 }
 
 // TabRestoreService ----------------------------------------------------------
 
 TabRestoreService::~TabRestoreService() {
 }