Plumb phase/momentum for WheelEvent.

third_party/WebKit/public/platform/WebInputEvent.h

 /*
  * Copyright (C) 2009 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 402 matching lines @@
     // This field exists to allow BrowserPlugin to mark MouseWheel events as
     // 'resent' to handle the case where an event is not consumed when first
     // encountered; it should be handled differently by the plugin when it is
     // sent for thesecond time. No code within Blink touches this, other than to
     // plumb it through event conversions.
     int resendingPluginId;
 
     Phase phase;
     Phase momentumPhase;
 
-    // Rubberbanding is an OSX visual effect. When a user scrolls the content
-    // area with a track pad, and the content area is already at its limit in
-    // the direction being scrolled, the entire content area is allowed to
-    // scroll slightly off screen, revealing a grey background. When the user
-    // lets go, the content area snaps back into place. Blink is responsible
-    // for this rubberbanding effect, but the embedder may wish to disable
-    // rubber banding in the left or right direction, if the scroll should have
-    // an alternate effect. The common case is that a scroll in the left or
-    // right directions causes a back or forwards navigation, respectively.
-    //
-    // These flags prevent rubber banding from starting in a given direction,
-    // but have no effect on an ongoing rubber banding. A rubber banding that
-    // started in the vertical direction is allowed to continue in the right
-    // direction, even if canRubberbandRight is 0.
-    bool canRubberbandLeft;
-    bool canRubberbandRight;
-
     bool scrollByPage;
     bool hasPreciseScrollingDeltas;
 
     RailsMode railsMode;
 
     // Whether the event is blocking, non-blocking, all event
     // listeners were passive or was forced to be non-blocking.
     DispatchType dispatchType;
 
     WebMouseWheelEvent()
         : WebMouseEvent(sizeof(WebMouseWheelEvent))
         , deltaX(0.0f)
         , deltaY(0.0f)
         , wheelTicksX(0.0f)
         , wheelTicksY(0.0f)
         , accelerationRatioX(1.0f)
         , accelerationRatioY(1.0f)
         , resendingPluginId(-1)
         , phase(PhaseNone)
         , momentumPhase(PhaseNone)
-        , canRubberbandLeft(true)
-        , canRubberbandRight(true)
         , scrollByPage(false)
         , hasPreciseScrollingDeltas(false)
         , railsMode(RailsModeFree)
         , dispatchType(Blocking)
     {
     }
 };
 
 // WebGestureEvent --------------------------------------------------------------
 
@@ skipping 184 matching lines @@
         , uniqueTouchEventId(0)
     {
     }
 };
 
 #pragma pack(pop)
 
 } // namespace blink
 
 #endif