[TimeZoneMonitor] Decouple //content/browser/time_zone_monitor* to //device/.

device/time_zone_monitor/time_zone_monitor_mac.mm

 // Copyright 2014 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.
 
 #import <Foundation/Foundation.h>
 
 #include "base/macros.h"
-#include "content/browser/time_zone_monitor.h"
+#include "device/time_zone_monitor/time_zone_monitor.h"
 
-namespace content {
+namespace device {
 
 class TimeZoneMonitorMac : public TimeZoneMonitor {
  public:
   TimeZoneMonitorMac() : TimeZoneMonitor() {
     NSNotificationCenter* nc = [NSNotificationCenter defaultCenter];
     notification_observer_ =
         [nc addObserverForName:NSSystemTimeZoneDidChangeNotification
                         object:nil
                          queue:nil
                     usingBlock:^(NSNotification* notification) {
@@ skipping 11 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(TimeZoneMonitorMac);
 };
 
 // static
 std::unique_ptr<TimeZoneMonitor> TimeZoneMonitor::Create(
     scoped_refptr<base::SequencedTaskRunner> file_task_runner) {
   return std::unique_ptr<TimeZoneMonitor>(new TimeZoneMonitorMac());
 }
 
-}  // namespace content
+}  // namespace device