New AppListView Scroll Behavior.

ui/views/controls/textfield/textfield_controller.h

Index: ui/views/controls/textfield/textfield_controller.h
diff --git a/ui/views/controls/textfield/textfield_controller.h b/ui/views/controls/textfield/textfield_controller.h
index 7dcffb9648ada99292c4cdb40132528b05cf877a..d32dc6e4bf454c1b987304a26317c2e2d4aa3f91 100644
--- a/ui/views/controls/textfield/textfield_controller.h
+++ b/ui/views/controls/textfield/textfield_controller.h
@@ -39,7 +39,8 @@ class VIEWS_EXPORT TextfieldController {
 
   // This method is called to get notified about mouse events in the edit.
   // Returns true if the message was handled and should not be processed
-  // further. Currently, only mouse down events are sent here.
+  // further. Currently, only mouse down events and mouse wheel events are sent
+  // here.
   virtual bool HandleMouseEvent(Textfield* sender,
                                 const ui::MouseEvent& mouse_event);