Scroll events should indicate whether or not they have pixel data.

1. Updated all integet properties of AccessibilityRecord to be set to -1
   so this is a clue to the client that this property is irrelevant for
   the current event type.

bug:5031598

Change-Id: Ifedc15bf2249847cbc6cbcb83f5732e17b8b2903
1 file changed