Introduce all the plumbing for Session Storage. This mostly consists of crea...

chrome/browser/tab_contents/navigation_controller.h

 // Copyright (c) 2009 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.
 
 #ifndef CHROME_BROWSER_TAB_CONTENTS_NAVIGATION_CONTROLLER_H_
 #define CHROME_BROWSER_TAB_CONTENTS_NAVIGATION_CONTROLLER_H_
 
 #include "build/build_config.h"
 
 #include <string>
@@ skipping 356 matching lines @@
   SSLManager* ssl_manager() { return &ssl_manager_; }
 
   // Returns true if a reload happens when activated (SetActive(true) is
   // invoked). This is true for session/tab restore and cloned tabs.
   bool needs_reload() const { return needs_reload_; }
 
   // Returns the largest restored page ID seen in this navigation controller,
   // if it was restored from a previous session.  (-1 otherwise)
   int max_restored_page_id() const { return max_restored_page_id_; }
 
+  // The session storage namespace id that all child render views should use.
+  int64 session_storage_namespace_id() const {
+    return session_storage_namespace_id_;
+  }
+
   // Disables checking for a repost and prompting the user. This is used during
   // testing.
   static void DisablePromptOnRepost();
 
   // Maximum number of entries before we start removing entries from the front.
   static void set_max_entry_count(size_t max_entry_count) {
     max_entry_count_ = max_entry_count;
   }
   static size_t max_entry_count() { return max_entry_count_; }
 
@@ skipping 134 matching lines @@
 
   // Unique identifier of the window we're in. Used by session restore.
   SessionID window_id_;
 
   // The time ticks at which the last document was loaded.
   base::TimeTicks last_document_loaded_;
 
   // Whether a user gesture has been observed since the last navigation.
   bool user_gesture_observed_;
 
+  // The session storage id that any (indirectly) owned RenderView should use.
+  int64 session_storage_namespace_id_;
+
   // Should Reload check for post data? The default is true, but is set to false
   // when testing.
   static bool check_for_repost_;
 
   // The maximum number of entries that a navigation controller can store.
   static size_t max_entry_count_;
 
   DISALLOW_COPY_AND_ASSIGN(NavigationController);
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_NAVIGATION_CONTROLLER_H_