Pepper: Fix comments for PPB and PPP InputEvent.

ppapi/api/ppp_input_event.idl

Index: ppapi/api/ppp_input_event.idl
diff --git a/ppapi/api/ppp_input_event.idl b/ppapi/api/ppp_input_event.idl
index a7efb5b6156c904e210e9ea82d271ffe767e9bd4..97285c2842050d3f5877f26e904ad71a9cf7213b 100644
--- a/ppapi/api/ppp_input_event.idl
+++ b/ppapi/api/ppp_input_event.idl
@@ -20,10 +20,10 @@ interface PPP_InputEvent {
    * PPB_InputEvent.RequestInputEvents() or RequestFilteringInputEvents(). By
    * default, no events are delivered.
    *
-   * If the event was handled, it will not be forwarded to the web page or
-   * browser. If it was not handled, it will bubble according to the normal
-   * rules. So it is important that an instance respond accurately with whether
-   * event propagation should continue.
+   * If the event was handled, it will not be forwarded to the default handlers
+   * in the web page.  If it was not handled, it may be dispatched to a default
+   * handler. So it is important that an instance respond accurately with
+   * whether event propagation should continue.
    *
    * Event propagation also controls focus. If you handle an event like a mouse
    * event, typically the instance will be given focus. Returning false from