Broadcast NotifyTimezoneChange to all RenderProcessHosts when the system time zone changes

content/browser/time_zone_monitor.cc

Index: content/browser/time_zone_monitor.cc
diff --git a/content/browser/time_zone_monitor.cc b/content/browser/time_zone_monitor.cc
new file mode 100644
index 0000000000000000000000000000000000000000..0c17f8e52062f5841cd2b893a56d807ffc108fd7
--- /dev/null
+++ b/content/browser/time_zone_monitor.cc
@@ -0,0 +1,31 @@
+// 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.
+
+#include "content/browser/time_zone_monitor.h"
+
+#include "base/logging.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/render_process_host.h"
+
+namespace content {
+
+TimeZoneMonitor::TimeZoneMonitor() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+}
+
+TimeZoneMonitor::~TimeZoneMonitor() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+}
+
+void TimeZoneMonitor::NotifyRenderers() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  for (RenderProcessHost::iterator iterator =
+           RenderProcessHost::AllHostsIterator();
+       !iterator.IsAtEnd();
+       iterator.Advance()) {
+    iterator.GetCurrentValue()->NotifyTimezoneChange();
+  }
+}
+
+}  // namespace content