wm: Update namespace and header define guards.

src/platform/window_manager/motion_event_coalescer.cc

 // 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.
 
 #include "window_manager/motion_event_coalescer.h"
 
 #include "chromeos/obsolete_logging.h"
 
-namespace chromeos {
+namespace window_manager {
+
+using chromeos::Closure;
 
 MotionEventCoalescer::MotionEventCoalescer(Closure* cb, int timeout_ms)
     : timer_id_(0),
       timeout_ms_(timeout_ms),
       have_queued_position_(false),
       x_(0),
       y_(0),
       cb_(cb) {
   CHECK(cb);
   CHECK_GT(timeout_ms, 0);
@@ skipping 45 matching lines @@
 }
 
 gboolean MotionEventCoalescer::HandleTimer() {
   if (have_queued_position_) {
     cb_->Run();
     have_queued_position_ = false;
   }
   return TRUE;
 }
 
-}  // namespace chromeos
+}  // namespace window_manager