views-desktop: Fix sending mousewheel events to the correct view.

views/desktop/desktop_window_view.cc

Index: views/desktop/desktop_window_view.cc
diff --git a/views/desktop/desktop_window_view.cc b/views/desktop/desktop_window_view.cc
index 95aa1598e836e17a2d076632bdf2c76a97b3aa3b..67abf6014c1e251f8d5de0e475a42b562b1abe54 100644
--- a/views/desktop/desktop_window_view.cc
+++ b/views/desktop/desktop_window_view.cc
@@ -44,6 +44,16 @@ class DesktopWindow : public Widget {
     return native_widget ? native_widget->OnKeyEvent(event) : false;
   }
 
+  virtual bool OnMouseEvent(const MouseEvent& event) {

[sky, 2011/08/17 15:50:35]

OVERRIDE

+    if (event.type() == ui::ET_MOUSEWHEEL) {
+      NativeWidgetViews* native_widget =
+          desktop_window_view_->active_native_widget();
+      if (native_widget)
+        return native_widget->delegate()->OnMouseEvent(event);
+    }
+    return Widget::OnMouseEvent(event);
+  }
+
   DesktopWindowView* desktop_window_view_;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopWindow);