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

chrome/renderer/render_view.h

Index: chrome/renderer/render_view.h
===================================================================
--- chrome/renderer/render_view.h	(revision 36257)
+++ chrome/renderer/render_view.h	(working copy)
@@ -141,7 +141,8 @@
       const RendererPreferences& renderer_prefs,
       const WebPreferences& webkit_prefs,
       SharedRenderViewCounter* counter,
-      int32 routing_id);
+      int32 routing_id,
+      int64 session_storage_namespace_id);
 
   // Sets the "next page id" counter.
   static void SetNextPageID(int32 next_page_id);
@@ -465,7 +466,8 @@
   typedef std::map<std::string, int> HostZoomLevels;
 
   explicit RenderView(RenderThreadBase* render_thread,
-                      const WebPreferences& webkit_preferences);
+                      const WebPreferences& webkit_preferences,
+                      int64 session_storage_namespace_id);
 
   // Initializes this view with the given parent and ID. The |routing_id| can be
   // set to 'MSG_ROUTING_NONE' if the true ID is not yet known. In this case,
@@ -998,6 +1000,11 @@
 
   HostZoomLevels host_zoom_levels_;
 
+  // The ID is valid when this class is initialized, but the actual session
+  // storage namespace is created lazily.
+  int64 session_storage_namespace_id_;
+  scoped_ptr<WebKit::WebStorageNamespace> session_storage_namespace_;
+
   DISALLOW_COPY_AND_ASSIGN(RenderView);
 };