wm: Update namespace and header define guards.

src/platform/window_manager/metrics_reporter.h

 // Copyright (c) 2009 The Chromium OS Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef __PLATFORM_WINDOW_MANAGER_METRICS_REPORTER_H__
-#define __PLATFORM_WINDOW_MANAGER_METRICS_REPORTER_H__
+#ifndef WINDOW_MANAGER_METRICS_REPORTER_H_
+#define WINDOW_MANAGER_METRICS_REPORTER_H_
 
 #include <glib.h>
 #include <string>
 
 namespace chrome_os_pb {
 class SystemMetrics;
 }
 
-namespace chromeos {
+namespace window_manager {
 
 class LayoutManager;
 class WmIpc;
 
 // Gathers metrics and attempts to send them to Chrome for reporting.
 //
 // Currently asks the LayoutManager for any metrics it has been keeping,
 // and then uses a WmIpc instance to talk to chrome.  Eventually, we want
 // to use DBus instead.
 class MetricsReporter {
@@ skipping 15 matching lines @@
   // boot scripts.  Given the fully-specified path, this method reads in
   // the boot time and puts it into the provided protobuffer.
   // Returns true on success, false otherwise.
   bool GatherBootTime(const std::string& filename,
                       chrome_os_pb::SystemMetrics *metrics);
 
   LayoutManager *lm_;  // does not take ownership.
   WmIpc *ipc_;  // does not take ownership.
 };
 
-}  // namespace chromeos
+}  // namespace window_manager
 
-#endif  // __PLATFORM_WINDOW_MANAGER_METRICS_REPORTER_H__
+#endif