Use MSG.time for WebInputEvent timestamps on Windows

Use MSG.time for WebInputEvent timestamps on Windows

Previously on Windows, WebInputEvents generated from ui::Events would call
|GetMessageTime()| to initialize the WebInputEvent timestamp. There are no
guarantees that such a call is valid at that time.  Instead, use the MSG.time
timestamp generated when the ui::Event was first created from the HWND message.

BUG=367156
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=267056

[jdduke (slow), 2014-04-28 20:45:06]

Does this look about right? I checked each ui::KeyEvent and ui::MouseEvent
creation in hwnd_message_handler.cc, so we should have valid |MSG.time| samples.

I'm also unsure if we should be DCHECKing... it looks like GetTickCount() resets
every 40-some-odd days... sigh...

[tdresser, 2014-04-29 13:33:36]

LGTM

https://codereview.chromium.org/252083002/diff/40001/content/browser/renderer...
File content/browser/renderer_host/input/web_input_event_builders_win.h (right):

https://codereview.chromium.org/252083002/diff/40001/content/browser/renderer...
content/browser/renderer_host/input/web_input_event_builders_win.h:38: DWORD
time_Ms);
time_Ms -> time_ms

[jdduke (slow), 2014-04-29 16:23:09]

sadrul@: OWNER review for web_input_event_aura.cc/web_input_event_aurawin.cc?
Thanks.

[sadrul, 2014-04-29 16:24:35]

lgtm

[jdduke (slow), 2014-04-29 16:30:32]

The CQ bit was checked by jdduke@chromium.org

[commit-bot: I haz the power, 2014-04-29 16:31:28]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jdduke@chromium.org/252083002/60001

[commit-bot: I haz the power, 2014-04-29 18:30:26]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-04-29 18:30:26]

Try jobs failed on following builders:
  win_chromium_rel on tryserver.chromium

[jdduke (slow), 2014-04-29 18:40:24]

The CQ bit was checked by jdduke@chromium.org

[commit-bot: I haz the power, 2014-04-29 18:41:38]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jdduke@chromium.org/252083002/60001

[commit-bot: I haz the power, 2014-04-30 03:06:40]

Change committed as 267056