Various fixes to mouse wheel scrolling:...

webkit/glue/event_conversion.cc

Index: webkit/glue/event_conversion.cc
===================================================================
--- webkit/glue/event_conversion.cc	(revision 10933)
+++ webkit/glue/event_conversion.cc	(working copy)
@@ -123,10 +123,11 @@
                                                const WebMouseWheelEvent& e) {
   m_position = widget->convertFromContainingWindow(IntPoint(e.x, e.y));
   m_globalPosition = IntPoint(e.global_x, e.global_y);
-  m_deltaX = static_cast<float>(e.delta_x);
-  m_deltaY = static_cast<float>(e.delta_y);
+  m_deltaX = e.delta_x;
+  m_deltaY = e.delta_y;
   m_isAccepted = false;
-  m_granularity = ScrollByLineWheelEvent;
+  m_granularity = e.scroll_by_page ?
+      ScrollByPageWheelEvent : ScrollByLineWheelEvent;
   m_shiftKey = (e.modifiers & WebInputEvent::SHIFT_KEY) != 0;
   m_ctrlKey = (e.modifiers & WebInputEvent::CTRL_KEY) != 0;
   m_altKey = (e.modifiers & WebInputEvent::ALT_KEY) != 0;