CREDENTIAL: Add 'PasswordCredential::toFormData()'

Source/modules/credentialmanager/PasswordCredential.cpp

 // 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.
 
 #include "config.h"
 #include "modules/credentialmanager/PasswordCredential.h"
 
+#include "bindings/core/v8/Dictionary.h"
 #include "bindings/core/v8/ExceptionState.h"
+#include "core/dom/ExecutionContext.h"
 #include "core/html/DOMFormData.h"
+#include "modules/credentialmanager/FormDataOptions.h"
 #include "platform/credentialmanager/PlatformPasswordCredential.h"
+#include "platform/weborigin/SecurityOrigin.h"
 #include "public/platform/WebCredential.h"
 #include "public/platform/WebPasswordCredential.h"
 
 namespace blink {
 
 PasswordCredential* PasswordCredential::create(WebPasswordCredential* webPasswordCredential)
 {
     return new PasswordCredential(webPasswordCredential);
 }
 
 PasswordCredential* PasswordCredential::create(const String& id, const String& password, const String& name, const String& icon, ExceptionState& exceptionState)
 {
     KURL iconURL = parseStringAsURL(icon, exceptionState);
     if (exceptionState.hadException())
         return nullptr;
     return new PasswordCredential(id, password, name, iconURL);
 }
 
 PasswordCredential::PasswordCredential(WebPasswordCredential* webPasswordCredential)
     : Credential(webPasswordCredential->platformCredential())
 {
 }
 
 PasswordCredential::PasswordCredential(const String& id, const String& password, const String& name, const KURL& icon)
     : Credential(PlatformPasswordCredential::create(id, password, name, icon))
-    , m_formData(DOMFormData::create())
 {
-    m_formData->append("username", id);
-    m_formData->append("password", password);
+}
+
+DOMFormData* PasswordCredential::toFormData(ScriptState* scriptState, const FormDataOptions& options)
+{
+    DOMFormData* fd = DOMFormData::create();
+
+    String errorMessage;
+    if (!scriptState->executionContext()->isPrivilegedContext(errorMessage))
+        return fd;
+
+    fd->append(options.idName(), id());
+    fd->append(options.passwordName(), password());
+    fd->makeOpaque();
+    return fd;
 }
 
 const String& PasswordCredential::password() const
 {
     return static_cast<PlatformPasswordCredential*>(m_platformCredential.get())->password();
 }
 
 DEFINE_TRACE(PasswordCredential)
 {
-    visitor->trace(m_formData);
     Credential::trace(visitor);
 }
 
 } // namespace blink