Remove ENABLE_MESSAGE_CENTER

ui/message_center/dummy_message_center.cc

Index: ui/message_center/dummy_message_center.cc
diff --git a/ui/message_center/dummy_message_center.cc b/ui/message_center/dummy_message_center.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c6ce361ac86b1d76191952c6a68fffde54875a39
--- /dev/null
+++ b/ui/message_center/dummy_message_center.cc
@@ -0,0 +1,45 @@
+// Copyright (c) 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 "ui/message_center/message_center.h"
+#include "ui/message_center/message_center_switches.h"
+#include "ui/message_center/message_center_util.h"
+
+// This file contains dummy implementation of MessageCenter and used to compile
+// and link with Android and iOS implementations of Chrome which do not have
+// notification systems yet. This is to avoid spreading compile-time flags
+// everywhere in the code.
+#if !defined(OS_ANDROID) && !defined(OS_IOS)
+#error This file should only be used in Android or iOS builds.
+#endif
+
+namespace message_center {
+
+bool IsRichNotificationEnabled() {
+  return false;
+}
+
+// static
+void MessageCenter::Initialize() {
+}
+
+// static
+MessageCenter* MessageCenter::Get() {
+  return NULL;
+}
+
+// static
+void MessageCenter::Shutdown() {
+}
+
+MessageCenter::MessageCenter() {
+}
+
+MessageCenter::~MessageCenter() {
+}
+
+MessageCenter::Delegate::~Delegate() {
+}
+
+}  // namespace message_center