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

chrome/browser/extensions/extension_host.cc

 // Copyright (c) 2006-2009 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.
 
 #include "chrome/browser/extensions/extension_host.h"
 
 #include <list>
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "base/keyboard_codes.h"
 #include "base/message_loop.h"
 #include "base/singleton.h"
 #include "base/string_util.h"
 #include "chrome/browser/browser.h"
 #include "chrome/browser/browser_list.h"
 #include "chrome/browser/browser_shutdown.h"
 #include "chrome/browser/browser_theme_provider.h"
 #include "chrome/browser/browsing_instance.h"
 #include "chrome/browser/debugger/devtools_manager.h"
 #include "chrome/browser/dom_ui/dom_ui_factory.h"
 #include "chrome/browser/extensions/extension_message_service.h"
 #include "chrome/browser/extensions/extension_tabs_module.h"
+#include "chrome/browser/in_process_webkit/dom_storage_context.h"
+#include "chrome/browser/in_process_webkit/webkit_context.h"
 #include "chrome/browser/jsmessage_box_handler.h"
 #include "chrome/browser/profile.h"
 #include "chrome/browser/renderer_host/render_view_host.h"
 #include "chrome/browser/renderer_host/render_process_host.h"
 #include "chrome/browser/renderer_host/render_widget_host.h"
 #include "chrome/browser/renderer_host/render_widget_host_view.h"
 #include "chrome/browser/renderer_host/site_instance.h"
 #include "chrome/browser/renderer_preferences_util.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
 #include "chrome/browser/tab_contents/tab_contents_view.h"
@@ skipping 82 matching lines @@
 // ExtensionHost
 
 ExtensionHost::ExtensionHost(Extension* extension, SiteInstance* site_instance,
                              const GURL& url, ViewType::Type host_type)
     : extension_(extension),
       profile_(site_instance->browsing_instance()->profile()),
       did_stop_loading_(false),
       document_element_available_(false),
       url_(url),
       extension_host_type_(host_type) {
-  render_view_host_ = new RenderViewHost(site_instance, this, MSG_ROUTING_NONE);
+  // TODO(jorlow): Is creating a new "SessionStorage" per extension host the
+  //               right thing to do here?  I'm really not sure.
+  int64 session_storage_namespace_id = profile_->GetWebKitContext()->
+      dom_storage_context()->AllocateSessionStorageNamespaceId();
+  render_view_host_ = new RenderViewHost(site_instance, this, MSG_ROUTING_NONE,
+                                         session_storage_namespace_id);
   render_view_host_->AllowBindings(BindingsPolicy::EXTENSION);
   if (enable_dom_automation_)
     render_view_host_->AllowBindings(BindingsPolicy::DOM_AUTOMATION);
 
   // Listen for when the render process' handle is available so we can add it
   // to the task manager then.
   registrar_.Add(this, NotificationType::RENDERER_PROCESS_CREATED,
                  Source<RenderProcessHost>(render_process_host()));
 }
 
@@ skipping 495 matching lines @@
     // Extensions hosted in ExternalTabContainer objects may not have
     // an associated browser.
     Browser* browser = GetBrowser();
     if (browser)
       window_id = ExtensionTabUtil::GetWindowId(browser);
   } else if (extension_host_type_ != ViewType::EXTENSION_BACKGROUND_PAGE) {
     NOTREACHED();
   }
   return window_id;
 }