Bug fixes in the accessibility interrogation APIs

1. AccessibilityNodeInfo was not overriding equals.

2. ViewAncestor was not calling the callback for
   setting the result of an interrogation request
   thus making the system process wait upto the
   maximal timeout.

Change-Id: I040a3c12d97f48aee319ba6414879546e71e9b8e
2 files changed