Modify gesture event types for WebView-tag scroll bubbling.

public/web/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 355 matching lines @@
     };
 
     float deltaX;
     float deltaY;
     float wheelTicksX;
     float wheelTicksY;
 
     float accelerationRatioX;
     float accelerationRatioY;
 
+    // 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
@@ skipping 19 matching lines @@
     RailsMode railsMode;
 
     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)
         , canScroll(true)
         , railsMode(RailsModeFree)
     {
     }
 };
 
 // WebGestureEvent --------------------------------------------------------------
 
 class WebGestureEvent : public WebInputEvent {
 public:
     int x;
     int y;
     int globalX;
     int globalY;
     WebGestureDevice sourceDevice;
+    // This field exists to allow BrowserPlugin to mark GestureScroll 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;
 
     union {
         // Tap information must be set for GestureTap, GestureTapUnconfirmed,
         // and GestureDoubleTap events.
         struct {
             int tapCount;
             float width;
             float height;
         } tap;
 
@@ skipping 61 matching lines @@
             float scale;
         } pinchUpdate;
     } data;
 
     WebGestureEvent()
         : WebInputEvent(sizeof(WebGestureEvent))
         , x(0)
         , y(0)
         , globalX(0)
         , globalY(0)
+        , resendingPluginId(-1)
     {
         memset(&data, 0, sizeof(data));
     }
 };
 
 // WebTouchEvent --------------------------------------------------------------
 
 // TODO(e_hakkinen): Replace with WebPointerEvent. crbug.com/508283
 class WebTouchEvent : public WebInputEvent {
 public:
@@ skipping 27 matching lines @@
         , uniqueTouchEventId(0)
     {
     }
 };
 
 #pragma pack(pop)
 
 } // namespace blink
 
 #endif