Call base::Time::NowFromSystemTime() on WM_TIMECHANGE

ui/views/win/hwnd_message_handler.cc

 // Copyright (c) 2012 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/views/win/hwnd_message_handler.h"
 
 #include <dwmapi.h>
 #include <oleacc.h>
 #include <shellapi.h>
 #include <tchar.h>
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/debug/alias.h"
 #include "base/location.h"
 #include "base/macros.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
+#include "base/time/time.h"
 #include "base/trace_event/trace_event.h"
 #include "base/win/scoped_gdi_object.h"
 #include "base/win/windows_version.h"
 #include "ui/base/view_prop.h"
 #include "ui/base/win/internal_constants.h"
 #include "ui/base/win/lock_state.h"
 #include "ui/base/win/mouse_wheel_util.h"
 #include "ui/base/win/shell.h"
 #include "ui/base/win/touch_input.h"
 #include "ui/display/win/dpi.h"
@@ skipping 2129 matching lines @@
     if (!ref.get())
       return;
     in_size_loop_ = false;
   }
 }
 
 void HWNDMessageHandler::OnThemeChanged() {
   ui::NativeThemeWin::CloseHandles();
 }
 
+void HWNDMessageHandler::OnTimeChange() {
+  // Call NowFromSystemTime() to force base::Time to re-initialize the clock
+  // from system time. Otherwise base::Time::Now() might continue to reflect the
+  // old system clock for some amount of time. See
+  // https://bugs.chromium.org/p/chromium/issues/detail?id=672906#c5

[msw, 2017/01/17 19:26:32]

nit: shorten url: crbug.com/672906#c5 (optionally with http://)

[estark, 2017/01/18 00:21:12]

Done.

+  base::Time::NowFromSystemTime();
+}
+
 LRESULT HWNDMessageHandler::OnTouchEvent(UINT message,
                                          WPARAM w_param,
                                          LPARAM l_param) {
   // Handle touch events only on Aura for now.
   int num_points = LOWORD(w_param);
   std::unique_ptr<TOUCHINPUT[]> input(new TOUCHINPUT[num_points]);
   if (ui::GetTouchInputInfoWrapper(reinterpret_cast<HTOUCHINPUT>(l_param),
                                    num_points, input.get(),
                                    sizeof(TOUCHINPUT))) {
     // input[i].dwTime doesn't necessarily relate to the system time at all,
@@ skipping 593 matching lines @@
   MONITORINFO monitor_info = {sizeof(monitor_info)};
   GetMonitorInfo(MonitorFromWindow(hwnd(), MONITOR_DEFAULTTOPRIMARY),
                  &monitor_info);
   gfx::Rect shrunk_rect(monitor_info.rcMonitor);
   shrunk_rect.set_height(shrunk_rect.height() - 1);
   background_fullscreen_hack_ = true;
   SetBoundsInternal(shrunk_rect, false);
 }
 
 }  // namespace views