Remove PlatformWheelEvent and use WebMouseWheelEvent instead

third_party/WebKit/public/platform/WebMouseWheelEvent.h

 // Copyright 2016 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 WebMouseWheelEvent_h
 #define WebMouseWheelEvent_h
 
 #include "WebInputEvent.h"
 
 namespace blink {
@@ skipping 50 matching lines @@
         wheelTicksY(0.0f),
         accelerationRatioX(1.0f),
         accelerationRatioY(1.0f),
         resendingPluginId(-1),
         phase(PhaseNone),
         momentumPhase(PhaseNone),
         scrollByPage(false),
         hasPreciseScrollingDeltas(false),
         railsMode(RailsModeFree),
         dispatchType(Blocking) {}
+#if INSIDE_BLINK
+  BLINK_PLATFORM_EXPORT float deltaXInRootFrame() const;
+  BLINK_PLATFORM_EXPORT float deltaYInRootFrame() const;
+
+  // Sets any scaled values to be their computed values and sets |frameScale|
+  // back to 1 and |translateX|, |translateY| back to 0.
+  BLINK_PLATFORM_EXPORT WebMouseWheelEvent flattenTransform() const;
+
+  bool cancelable() const { return dispatchType == Blocking; }
+#endif
 };
 #pragma pack(pop)
 
 }  // namespace blink
 
 #endif  // WebMouseWheelEvent_h