Add initial support for native Linux desktop notifications

chrome/browser/notifications/notification_platform_bridge_linux.cc

+// Copyright 2017 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/notifications/notification_platform_bridge_linux.h"
+
+#include "base/memory/ptr_util.h"
+#include "base/strings/utf_string_conversions.h"
+#include "chrome/browser/notifications/notification.h"
+
+namespace {
+
+const char kFreedesktopNotificationsName[] = "org.freedesktop.Notifications";
+const char kFreedesktopNotificationsPath[] = "/org/freedesktop/Notifications";
+
+}  // namespace
+
+// static
+NotificationPlatformBridge* NotificationPlatformBridge::Create() {
+  GDBusProxy* notification_proxy = g_dbus_proxy_new_for_bus_sync(
+      G_BUS_TYPE_SESSION,
+      static_cast<GDBusProxyFlags>(G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES |
+                                   G_DBUS_PROXY_FLAGS_DO_NOT_CONNECT_SIGNALS |
+                                   G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START),
+      nullptr, kFreedesktopNotificationsName, kFreedesktopNotificationsPath,
+      kFreedesktopNotificationsName, nullptr, nullptr);
+  if (!notification_proxy)
+    return nullptr;
+  return new NotificationPlatformBridgeLinux(notification_proxy);
+}
+
+NotificationPlatformBridgeLinux::NotificationPlatformBridgeLinux(
+    GDBusProxy* notification_proxy)
+    : notification_proxy_(notification_proxy) {}
+
+NotificationPlatformBridgeLinux::~NotificationPlatformBridgeLinux() {
+  g_object_unref(notification_proxy_);
+}
+
+void NotificationPlatformBridgeLinux::Display(
+    NotificationCommon::Type notification_type,
+    const std::string& notification_id,
+    const std::string& profile_id,
+    bool is_incognito,
+    const Notification& notification) {
+  // TODO(thomasanderson): Add a complete implementation.
+  g_dbus_proxy_call(
+      notification_proxy_, "Notify",
+      g_variant_new("(susssasa{sv}i)", "", 0, "",
+                    base::UTF16ToUTF8(notification.title()).c_str(),
+                    base::UTF16ToUTF8(notification.message()).c_str(), nullptr,
+                    nullptr, -1),
+      G_DBUS_CALL_FLAGS_NONE, -1, nullptr, nullptr, nullptr);
+}
+
+void NotificationPlatformBridgeLinux::Close(
+    const std::string& profile_id,
+    const std::string& notification_id) {
+  NOTIMPLEMENTED();
+}
+
+void NotificationPlatformBridgeLinux::GetDisplayed(
+    const std::string& profile_id,
+    bool incognito,
+    const DisplayedNotificationsCallback& callback) const {
+  callback.Run(base::MakeUnique<std::set<std::string>>(), false);
+}