Address API council feedback on ContentionTimeStats API

Change the type of all times from int to long.  This is to avoid
potential conversion loss from unsigned int in C to int in Java.

Bug: 182585400

Bug: 172412545

Test: atest android.net.wifi

Test: atest com.android.server.wifi

Updated-PDD: TRUE

Signed-off-by: Mingguang Xu <mingguangxu@google.com>
Change-Id: I7ed3364a77bc9c6de82b2119dd8e3f0951575579
4 files changed