Pepper: Fix comments for PPB and PPP InputEvent.

ppapi/cpp/instance.h

Index: ppapi/cpp/instance.h
diff --git a/ppapi/cpp/instance.h b/ppapi/cpp/instance.h
index 6bf4e839381c3d371f0af86f88effabb37b31f21..f255fd9a61d0a09de65b3bf232b7786b4277cda0 100644
--- a/ppapi/cpp/instance.h
+++ b/ppapi/cpp/instance.h
@@ -174,10 +174,10 @@ class Instance {
   /// 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 any default
+  /// handlers. 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