Move SessionStorageNamespace entirely into NavigationController and support StoragePartitions.

chrome/browser/ui/extensions/shell_window.cc

Index: chrome/browser/ui/extensions/shell_window.cc
diff --git a/chrome/browser/ui/extensions/shell_window.cc b/chrome/browser/ui/extensions/shell_window.cc
index 1cbb7daad68aad4b7f2dcb7ac2df9a32f009cfe2..ec323fca5e37c9c33b07fab2da1ae7a108567543 100644
--- a/chrome/browser/ui/extensions/shell_window.cc
+++ b/chrome/browser/ui/extensions/shell_window.cc
@@ -89,7 +89,7 @@ ShellWindow::ShellWindow(Profile* profile,
   // subclass are not yet in place, since it's still halfway through its
   // constructor. As a result, overridden virtual methods won't be called.
   web_contents_ = WebContents::Create(
-      profile, SiteInstance::CreateForURL(profile, url), MSG_ROUTING_NONE, NULL,
+      profile, SiteInstance::CreateForURL(profile, url), MSG_ROUTING_NONE,
       NULL);
   contents_.reset(new TabContents(web_contents_));
   content::WebContentsObserver::Observe(web_contents_);