Patch is at https://chromium-review.googlesource.com/#/c/chromium/src/+/757617

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/65a5563ae004031e6d1b5868bc8cc2bd1b29c915

commit 65a5563ae004031e6d1b5868bc8cc2bd1b29c915
Author: Dave Tapuska <dtapuska@chromium.org>
Date: Sat Feb 10 01:54:48 2018

Fix using WM_POINTER instead of WM_TOUCH

- Add runtime setting to disable/enable WM_POINTER for touch. Defaults
  to disabled in this patch. Will be enabled as a followup change.
- Fix min/max/exit buttons for touch. For unhandled events do a hit test
  and check if they are in the client area. If they are mark them as
  handled as we don't want windows to send us compatibility events if
  we've already dispatched them from the pointer events.
- Set the last_touch_or_pen_message_time for touch events via WM_POINTER.

BUG= 792892 , 763223 

Change-Id: I4350c7e84f96271b9ec27119815bf37a9461d489
Reviewed-on: https://chromium-review.googlesource.com/911752
Commit-Queue: Dave Tapuska <dtapuska@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#535925}
[modify] https://crrev.com/65a5563ae004031e6d1b5868bc8cc2bd1b29c915/content/browser/renderer_host/legacy_render_widget_host_win.cc
[modify] https://crrev.com/65a5563ae004031e6d1b5868bc8cc2bd1b29c915/ui/base/ui_base_features.cc
[modify] https://crrev.com/65a5563ae004031e6d1b5868bc8cc2bd1b29c915/ui/base/ui_base_features.h
[modify] https://crrev.com/65a5563ae004031e6d1b5868bc8cc2bd1b29c915/ui/views/win/hwnd_message_handler.cc
[modify] https://crrev.com/65a5563ae004031e6d1b5868bc8cc2bd1b29c915/ui/views/win/hwnd_message_handler.h

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a6d8dfe11405486dac1603adbd00acfb4f687159

commit a6d8dfe11405486dac1603adbd00acfb4f687159
Author: Dave Tapuska <dtapuska@chromium.org>
Date: Mon Feb 12 18:29:16 2018

Enable PointerEventsForTouch by default.

Enable flag to use WM_POINTER instead of WM_TOUCH

BUG= 792892 , 763223 

Change-Id: Icc7c352a114209a737996db618e7156887cc21a7
Reviewed-on: https://chromium-review.googlesource.com/912533
Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Dave Tapuska <dtapuska@chromium.org>
Cr-Commit-Position: refs/heads/master@{#536136}
[modify] https://crrev.com/a6d8dfe11405486dac1603adbd00acfb4f687159/ui/base/ui_base_features.cc