Updated suborigin serialization to latest spec proposal

content/browser/child_process_security_policy_impl.h

Index: content/browser/child_process_security_policy_impl.h
diff --git a/content/browser/child_process_security_policy_impl.h b/content/browser/child_process_security_policy_impl.h
index 93c693e8a633a5aed5e0d6c43a698247009a995e..e0eaf4a971dd72990491ecf6dc4b0a20c3596a80 100644
--- a/content/browser/child_process_security_policy_impl.h
+++ b/content/browser/child_process_security_policy_impl.h
@@ -138,6 +138,10 @@ class CONTENT_EXPORT ChildProcessSecurityPolicyImpl
   // handlers.
   bool CanCommitURL(int child_id, const GURL& url);
 
+  // Whether the given origin is valid for an origin header. Valid origin
+  // headers are commitable URLs plus suborigin URLs.
+  bool CanSetAsOriginHeader(int child_id, const GURL& url);
+
   // Explicit permissions checks for FileSystemURL specified files.
   bool CanReadFileSystemFile(int child_id, const storage::FileSystemURL& url);
   bool CanWriteFileSystemFile(int child_id, const storage::FileSystemURL& url);