Add suborigin logic to url::Origin

content/public/browser/dom_storage_context.h

Index: content/public/browser/dom_storage_context.h
diff --git a/content/public/browser/dom_storage_context.h b/content/public/browser/dom_storage_context.h
index a4aba1e91e1b4f384a0e0eaa9891b8d6e062965c..61b2856717a2fc2b118dcff5a4522d4525cefb7b 100644
--- a/content/public/browser/dom_storage_context.h
+++ b/content/public/browser/dom_storage_context.h
@@ -39,8 +39,14 @@ class DOMStorageContext {
   virtual void GetSessionStorageUsage(
       const GetSessionStorageUsageCallback& callback) = 0;
 
-  // Deletes the local storage data for the given origin.
-  virtual void DeleteLocalStorage(const GURL& origin) = 0;
+  // Deletes the local storage data for the physical origin of |origin_url|,
+  // including all suborigins at the physical origin.
+  //
+  // See https://w3c.github.io/webappsec-suborigins/.
+  virtual void DeleteLocalStorageForPhysicalOrigin(const GURL& origin_url) = 0;
+
+  // Deletes the local storage for the origin of |origin_url|.
+  virtual void DeleteLocalStorage(const GURL& origin_url) = 0;
 
   // Deletes the session storage data identified by |usage_info|.
   virtual void DeleteSessionStorage(