Remove PlatformGestureEvent in favour of using WebGestureEvent

third_party/WebKit/Source/platform/scroll/ScrollTypes.h

 /*
  * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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 #ifndef ScrollTypes_h
 #define ScrollTypes_h
 
 #include "platform/geometry/FloatPoint.h"
+#include "public/platform/WebGestureEvent.h"
 #include "wtf/Assertions.h"
 
 namespace blink {
 
 // A ScrollOffset represents an offset from the scroll origin of a
 // ScrollableArea.  Note that "scroll origin" is not the same as the layout
 // concept of "location", nor is it necessarily coincident with the top/left of
 // the ScrollableArea's overflow rect.  See core/layout/README.md for more
 // information.
 typedef FloatSize ScrollOffset;
@@ skipping 202 matching lines @@
 }
 
 inline ScrollOffset toScrollDelta(ScrollDirectionPhysical dir, float delta) {
   if (dir == ScrollUp || dir == ScrollLeft)
     delta = -delta;
 
   return (dir == ScrollLeft || dir == ScrollRight) ? ScrollOffset(delta, 0)
                                                    : ScrollOffset(0, delta);
 }
 
+inline ScrollGranularity toPlatformScrollGranularity(
+    WebGestureEvent::ScrollUnits units) {
+  switch (units) {
+    case WebGestureEvent::ScrollUnits::PrecisePixels:
+      return ScrollGranularity::ScrollByPrecisePixel;
+    case WebGestureEvent::ScrollUnits::Pixels:
+      return ScrollGranularity::ScrollByPixel;
+    case WebGestureEvent::ScrollUnits::Page:
+      return ScrollGranularity::ScrollByPage;
+    default:
+      NOTREACHED();
+      return ScrollGranularity::ScrollByPrecisePixel;
+  }
+}
+
 typedef unsigned ScrollbarControlPartMask;
 
 }  // namespace blink
 
 #endif