Implement Permissions.query() and static PermissionStatus.

Source/modules/permissions/PermissionQueryCallback.cpp

+// Copyright 2015 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/permissions/PermissionQueryCallback.h"
+
+#include "bindings/core/v8/ScriptPromiseResolver.h"
+#include "modules/permissions/PermissionStatus.h"
+
+namespace blink {
+
+PermissionQueryCallback::PermissionQueryCallback(PassRefPtr<ScriptPromiseResolver> resolver, WebPermissionType permissionType)
+    : m_resolver(resolver)
+    , m_permissionType(permissionType)
+{
+    ASSERT(m_resolver);
+}
+
+PermissionQueryCallback::~PermissionQueryCallback()
+{
+}
+
+void PermissionQueryCallback::onSuccess(WebPermissionStatus* permissionStatus)
+{
+    if (!m_resolver->executionContext() || m_resolver->executionContext()->activeDOMObjectsAreStopped()) {
+        PermissionStatus::dispose(permissionStatus);
+        return;
+    }
+    m_resolver->resolve(PermissionStatus::take(m_resolver.get(), permissionStatus, m_permissionType));
+}
+
+void PermissionQueryCallback::onError()
+{
+    if (!m_resolver->executionContext() || m_resolver->executionContext()->activeDOMObjectsAreStopped()) {
+        return;
+    }
+    m_resolver->reject();
+}
+
+} // namespace blink