Listen to WM_TIMECHANGE messages in RenderViewHostImpl on windows

content/browser/time_zone_monitor_win.h

Index: content/browser/time_zone_monitor_win.h
diff --git a/content/browser/time_zone_monitor_win.h b/content/browser/time_zone_monitor_win.h
new file mode 100644
index 0000000000000000000000000000000000000000..a875d25821d1f44e2b7022980babeb0acb97ff9d
--- /dev/null
+++ b/content/browser/time_zone_monitor_win.h
@@ -0,0 +1,23 @@
+// Copyright (c) 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 "ui/gfx/win/singleton_hwnd.h"
+
+namespace content {
+
+class TimeZoneMonitorWin : gfx::SingletonHwnd::Observer {
+ public:
+  TimeZoneMonitorWin();
+  virtual ~TimeZoneMonitorWin();
+
+  // gfx::SingletonHwnd::Observer implementation.
+  virtual void OnWndProc(HWND hwnd,
+                         UINT message,
+                         WPARAM wparam,
+                         LPARAM lparam) OVERRIDE;
+ private:
+  DISALLOW_COPY_AND_ASSIGN(TimeZoneMonitorWin);
+};
+
+}