Garbage Collect the Storage directory on next profile start after an extension uninstall.

content/browser/site_instance_impl.h

Index: content/browser/site_instance_impl.h
diff --git a/content/browser/site_instance_impl.h b/content/browser/site_instance_impl.h
index 1f15e5915c34463b9d4141afedf9dd897f02ecec..fda0d3743a3c7ad382a53e3e8d1e5dae5885fc7e 100644
--- a/content/browser/site_instance_impl.h
+++ b/content/browser/site_instance_impl.h
@@ -53,10 +53,6 @@ class CONTENT_EXPORT SiteInstanceImpl : public SiteInstance,
     render_process_host_factory_ = rph_factory;
   }
 
-  // Returns the site for the given URL, which includes only the scheme and
-  // registered domain.  Returns an empty GURL if the URL has no host.
-  static GURL GetSiteForURL(BrowserContext* context, const GURL& url);
-
  protected:
   friend class BrowsingInstance;
   friend class SiteInstance;