Allow script to request durable storage permission (chrome side)

chrome/browser/durable_storage_permission_infobar_delegate.cc

Index: chrome/browser/durable_storage_permission_infobar_delegate.cc
diff --git a/chrome/browser/durable_storage_permission_infobar_delegate.cc b/chrome/browser/durable_storage_permission_infobar_delegate.cc
new file mode 100644
index 0000000000000000000000000000000000000000..d0ad2127d212799ea184679a8544cb4688816be6
--- /dev/null
+++ b/chrome/browser/durable_storage_permission_infobar_delegate.cc
@@ -0,0 +1,48 @@
+// Copyright 2013 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 "chrome/browser/durable_storage_permission_infobar_delegate.h"
+
+#include "base/strings/utf_string_conversions.h"
+#include "chrome/browser/infobars/infobar_service.h"
+#include "chrome/grit/generated_resources.h"
+#include "components/infobars/core/infobar.h"
+#include "grit/theme_resources.h"
+#include "net/base/net_util.h"
+#include "ui/base/l10n/l10n_util.h"
+
+// static
+infobars::InfoBar* DurableStoragePermissionInfoBarDelegate::Create(
+    InfoBarService* infobar_service,
+    PermissionQueueController* controller,
+    const PermissionRequestID& id,
+    const GURL& requesting_frame,
+    const std::string& display_languages,
+    ContentSettingsType type) {
+  return infobar_service->AddInfoBar(
+      infobar_service->CreateConfirmInfoBar(scoped_ptr<ConfirmInfoBarDelegate>(
+          new DurableStoragePermissionInfoBarDelegate(
+              controller, id, requesting_frame, display_languages, type))));
+}
+
+DurableStoragePermissionInfoBarDelegate::
+    DurableStoragePermissionInfoBarDelegate(
+        PermissionQueueController* controller,
+        const PermissionRequestID& id,
+        const GURL& requesting_frame,
+        const std::string& display_languages,
+        ContentSettingsType type)
+    : PermissionInfobarDelegate(controller, id, requesting_frame, type),
+      requesting_frame_(requesting_frame),
+      display_languages_(display_languages) {
+}
+
+base::string16 DurableStoragePermissionInfoBarDelegate::GetMessageText() const {
+  return l10n_util::GetStringFUTF16(
+      IDS_DURABLE_STORAGE_INFOBAR_QUESTION,
+      net::FormatUrl(requesting_frame_.GetOrigin(), display_languages_,
+                     net::kFormatUrlOmitUsernamePassword |
+                         net::kFormatUrlOmitTrailingSlashOnBareHostname,
+                     net::UnescapeRule::SPACES, NULL, NULL, NULL));
+}