Replacing WM_TOUCH with WM_POINTER for touch events on Wins 8+

ui/events/event.h

 // 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.
 
 #ifndef UI_EVENTS_EVENT_H_
 #define UI_EVENTS_EVENT_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 699 matching lines @@
   const PointerDetails& pointer_details() const { return pointer_details_; }
   void set_pointer_details(const PointerDetails& pointer_details);
 
  private:
   // Adjusts rotation_angle_ to within the acceptable range.
   void FixRotationAngle();
 
   // A unique identifier for the touch event.
   uint32_t unique_event_id_;
 
+  // TODO(726824): Remove rotation_angle_ from ui::TouchEvent, just use twist
+  // in PointerDetails.
   // Clockwise angle (in degrees) of the major axis from the X axis. Must be
   // less than 180 and non-negative.
   float rotation_angle_;
 
   // Whether the (unhandled) touch event will produce a scroll event (e.g., a
   // touchmove that exceeds the platform slop region, or a touchend that
   // causes a fling). Defaults to false.
   bool may_cause_scrolling_;
 
   // True if this event should remove the mapping between the native
@@ skipping 324 matching lines @@
   // dispatched. This field gets a non-zero value only for gestures that are
   // released through TouchDispositionGestureFilter::SendGesture. The gesture
   // events that aren't fired directly in response to processing a touch-event
   // (e.g. timer fired ones), this id is zero. See crbug.com/618738.
   uint32_t unique_touch_event_id_;
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_EVENT_H_