Add WebSecurityOrigin::CanAccessFeatureRequiringSecureOrigin.

public/web/WebSecurityOrigin.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 65 matching lines @@
     // SecurityOrigin. For example, call this function before allowing
     // script from one security origin to read or write objects from
     // another SecurityOrigin.
     BLINK_EXPORT bool canAccess(const WebSecurityOrigin&) const;
 
     // Returns true if this WebSecurityOrigin can read content retrieved from
     // the given URL. For example, call this function before allowing script
     // from a given security origin to receive contents from a given URL.
     BLINK_EXPORT bool canRequest(const WebURL&) const;
 
+    // A "secure origin" as defined by [1] are those that load resources either
+    // from the local machine (necessarily trusted) or over the network from a
+    // cryptographically-authenticated server.
+    //
+    // [1] http://www.chromium.org/Home/chromium-security/security-faq#TOC-Which-origins-are-secure-
+    bool canAccessFeatureRequiringSecureOrigin(WebString& errorMessage) const;
+
     // Returns a string representation of the WebSecurityOrigin.  The empty
     // WebSecurityOrigin is represented by "null".  The representation of a
     // non-empty WebSecurityOrigin resembles a standard URL.
     BLINK_EXPORT WebString toString() const;
 
     // Returns a string representation of this WebSecurityOrigin that can
     // be used as a file.  Should be used in storage APIs only.
     BLINK_EXPORT WebString databaseIdentifier() const;
 
     // Returns true if this WebSecurityOrigin can access usernames and
@@ skipping 11 matching lines @@
 #endif
 
 private:
     void assign(WebSecurityOriginPrivate*);
     WebSecurityOriginPrivate* m_private;
 };
 
 } // namespace blink
 
 #endif