Credential manager: Convert strings to URLs early.

Source/modules/credentialmanager/LocalCredential.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef LocalCredential_h
 #define LocalCredential_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "bindings/core/v8/SerializedScriptValue.h"
 #include "modules/credentialmanager/Credential.h"
 #include "platform/heap/Handle.h"
+#include "platform/weborigin/KURL.h"
 
 namespace blink {
 
 class LocalCredential FINAL : public Credential {
 public:
-    static LocalCredential* create(const String& id, const String& name, const String& avatarURL, const String& password);
+    static LocalCredential* create(const String& id, const String& name, const String& avatar, const String& password, ExceptionState&);
 
     // LocalCredential.idl
     const String& password() const;
 
 private:
-    LocalCredential(const String& id, const String& name, const String& avatarURL, const String& password);
+    LocalCredential(const String& id, const String& name, const KURL& avatarURL, const String& password);

[philipj_slow, 2014/08/12 09:42:40]

When is the URL suffix included on the variable name? It seems a bit redundant
when the type is KURL.

 };
 
 } // namespace blink
 
 #endif // Credential_h