Various fixes to mouse wheel scrolling:...

webkit/glue/webinputevent.h

 // Copyright (c) 2006-2008 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 WEBKIT_GLUE_WEBINPUTEVENT_H_
 #define WEBKIT_GLUE_WEBINPUTEVENT_H_
 
 #include "base/basictypes.h"
 #include "base/string16.h"
 
@@ skipping 113 matching lines @@
 #elif defined(OS_LINUX)
   explicit WebMouseEvent(const GdkEventButton* event);
   explicit WebMouseEvent(const GdkEventMotion* event);
 #endif
 };
 
 // WebMouseWheelEvent ---------------------------------------------------------
 
 class WebMouseWheelEvent : public WebMouseEvent {
  public:
-  int delta_x;
-  int delta_y;
+  float delta_x;
+  float delta_y;
+  bool scroll_by_page;
 
   WebMouseWheelEvent() {}
 #if defined(OS_WIN)
   WebMouseWheelEvent(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam);
 #elif defined(OS_MACOSX)
   WebMouseWheelEvent(NSEvent *event, NSView* view);
 #elif defined(OS_LINUX)
   explicit WebMouseWheelEvent(const GdkEventScroll* event);
 #endif
 };
@@ skipping 58 matching lines @@
   explicit WebKeyboardEvent(HWND hwnd, UINT message, WPARAM wparam,
                             LPARAM lparam);
 #elif defined(OS_MACOSX)
   explicit WebKeyboardEvent(NSEvent *event);
 #elif defined(OS_LINUX)
   explicit WebKeyboardEvent(const GdkEventKey* event);
 #endif
 };
 
 #endif  // WEBKIT_GLUE_WEBINPUTEVENT_H_