wm: Update namespace and header define guards.

src/platform/window_manager/event_consumer.h

Index: src/platform/window_manager/event_consumer.h
diff --git a/src/platform/window_manager/event_consumer.h b/src/platform/window_manager/event_consumer.h
index 431690daff36b46df3f40c6fa0c1f8951f17f549..fcdeecc15e6f35e5cefe4490b6d33cc39ff89b81 100644
--- a/src/platform/window_manager/event_consumer.h
+++ b/src/platform/window_manager/event_consumer.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef __PLATFORM_WINDOW_MANAGER_EVENT_CONSUMER_H__
-#define __PLATFORM_WINDOW_MANAGER_EVENT_CONSUMER_H__
+#ifndef WINDOW_MANAGER_EVENT_CONSUMER_H_
+#define WINDOW_MANAGER_EVENT_CONSUMER_H_
 
 extern "C" {
 #include <X11/Xlib.h>
@@ -13,7 +13,7 @@ extern "C" {
 
 typedef ::Window XWindow;
 
-namespace chromeos {
+namespace window_manager {
 
 class Window;
 
@@ -90,6 +90,6 @@ class EventConsumer {
   virtual bool HandleFocusChange(XWindow xid, bool focus_in) { return false; }
 };
 
-}  // namespace chromeos
+}  // namespace window_manager
 
 #endif