Move ExtensionEventRouter and related into extensions namespace

chrome/browser/extensions/event_names.cc

 // Copyright (c) 2012 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/extensions/extension_event_names.h"
+#include "chrome/browser/extensions/event_names.h"
 
-namespace extension_event_names {
+namespace extensions {
+
+namespace event_names {
 
 const char kOnTabActivated[] = "tabs.onActivated";
 const char kOnTabActiveChanged[] = "tabs.onActiveChanged";
 const char kOnTabAttached[] = "tabs.onAttached";
 const char kOnTabCreated[] = "tabs.onCreated";
 const char kOnTabDetached[] = "tabs.onDetached";
 const char kOnTabHighlightChanged[] = "tabs.onHighlightChanged";
 const char kOnTabHighlighted[] = "tabs.onHighlighted";
 const char kOnTabMoved[] = "tabs.onMoved";
 const char kOnTabRemoved[] = "tabs.onRemoved";
@@ skipping 39 matching lines @@
 
 #if defined(OS_CHROMEOS)
 const char kBluetoothOnAvailabilityChanged[] =
     "experimental.bluetooth.onAvailabilityChanged";
 const char kBluetoothOnDeviceDiscovered[] =
     "experimental.bluetooth.onDeviceDiscovered";
 const char kBluetoothOnPowerChanged[] =
     "experimental.bluetooth.onPowerChanged";
 #endif
 
-}  // namespace extension_event_names
+}  // namespace event_names
+
+}  // namespace extensions