Push API: use an enum to indicate status.

content/public/common/push_messaging_status.cc

Index: content/public/common/push_messaging_status.cc
diff --git a/content/public/common/push_messaging_status.cc b/content/public/common/push_messaging_status.cc
new file mode 100644
index 0000000000000000000000000000000000000000..0040072bc0806e7ff883b298b2ca2a6ca8f894f3
--- /dev/null
+++ b/content/public/common/push_messaging_status.cc
@@ -0,0 +1,38 @@
+// 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 "content/public/common/push_messaging_status.h"
+
+#include "base/logging.h"
+
+namespace content {
+
+const char* PushMessagingStatusToString(PushMessagingStatus status) {
+  switch (status) {
+    case PUSH_MESSAGING_STATUS_OK:
+      return "Operation has succeeded";
+
+    case PUSH_MESSAGING_STATUS_REGISTRATION_FAILED_NO_SERVICE_WORKER:
+      return "Registration failed - no Service Worker";
+
+    case PUSH_MESSAGING_STATUS_REGISTRATION_FAILED_SERVICE_NOT_AVAILABLE:
+      return "Registration failed - push service not available";
+
+    case PUSH_MESSAGING_STATUS_REGISTRATION_FAILED_LIMIT_REACHED:
+      return "Registration failed - registration limit has been reached";
+
+    case PUSH_MESSAGING_STATUS_REGISTRATION_FAILED_PERMISSION_DENIED:
+      return "Registration failed - permission denied";
+
+    case PUSH_MESSAGING_STATUS_REGISTRATION_FAILED_SERVICE_ERROR:
+      return "Registration failed - push service error";
+
+    case PUSH_MESSAGING_STATUS_ERROR:
+      return "Operation has failed (unspecified reason)";
+  }
+  NOTREACHED();
+  return "";
+}
+
+}  // namespace content