Remove WebTouchEvent from TouchEventManager APIs

third_party/WebKit/public/platform/WebPointerEvent.h

+// Copyright 2017 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 WebPointerEvent_h
+#define WebPointerEvent_h
+
+#include "WebInputEvent.h"
+#include "WebPointerProperties.h"
+#include "WebTouchEvent.h"
+
+namespace blink {
+
+// See WebInputEvent.h for details why this pack is here.
+#pragma pack(push, 4)
+
+// WebPointerEvent
+// This is a WIP and currently used only in Blink and only for touch.
+// TODO(nzolghadr): We should unify the fields in this class into
+// WebPointerProperties and not have pointertype specific attributes here.
+// --------------------------------------------------------------
+
+class WebPointerEvent : public WebInputEvent, public WebPointerProperties {
+ public:
+  WebPointerEvent()
+      : WebInputEvent(sizeof(WebPointerEvent)), WebPointerProperties(0) {}
+  BLINK_PLATFORM_EXPORT WebPointerEvent(const WebTouchEvent&,
+                                        const WebTouchPoint&);
+
+  float width;

[Rick Byers, 2017/06/21 15:03:27]

nit: please add comments describing the semantics / units for these three fields
(or if you/bokan@ can't easily figure it out - a TODO with the open questions). 
In general we want the public API to be pretty well documented.

[Navid Zolghadr, 2017/06/22 18:12:15]

done.

+  float height;
+
+  // ------------ Touch Point Specific ------------
+
+  float rotation_angle;
+
+  // ------------ Touch Event Specific ------------
+
+  // Whether the event is blocking, non-blocking, all event
+  // listeners were passive or was forced to be non-blocking.
+  DispatchType dispatch_type;
+
+  // For a single touch, this is true after the touch-point has moved beyond
+  // the platform slop region. For a multitouch, this is true after any
+  // touch-point has moved (by whatever amount).
+  bool moved_beyond_slop_region;
+
+  // Whether this touch event is a touchstart or a first touchmove event per
+  // scroll.
+  bool touch_start_or_first_touch_move;
+
+#if INSIDE_BLINK
+  bool IsCancelable() const { return dispatch_type == kBlocking; }
+
+  BLINK_PLATFORM_EXPORT WebPointerEvent WebPointerEventInRootFrame() const;
+
+#endif
+};
+
+#pragma pack(pop)
+
+}  // namespace blink
+
+#endif  // WebMouseEvent_h